The word "bolt" can be used as a noun referring to a fastener, a latch for doors/windows, an early flowering symptom in vegetables, a roll of cloth, or a flash of lightning. As a verb, it means to fasten with a bolt, to latch a door/window, to run away quickly, or to eat food rapidly.
[N-COUNT 可数名词]螺栓 A bolt is a long metal object which screws into a nut and is used to fasten things together.
2
[VERB 动词]用螺栓固定；闩上 When you bolt one thing to another, you fasten them firmly together, using a bolt.
[V n to n]
[V n with together/on]
[V-ed]
The safety belt is easy to fit as there's no need to bolt it to seat belt anchorage points...
由于不必扣在座位的固定夹上，安全带很容易就可以系好。
Bolt the components together...
把元器件组装在一起。
The doors were bolted on.
门都闩上了。
...a wooden bench which was bolted to the floor.
用螺栓固定在地板上的木制长椅
3
[N-COUNT 可数名词]（门、窗的）金属插销，闩 A bolt on a door or window is a metal bar that you can slide across in order to fasten the door or window.
I heard the sound of a bolt being slowly and reluctantly slid open.
我听到门闩被缓慢而吃力地拉开的声音。
4
[VERB 动词]闩上（门、窗） When you bolt a door or window, you slide the bolt across to fasten it.
[V n]
[V-ed]
He reminded her that he would have to lock and bolt the kitchen door after her.
他提醒她，在她走后他得把厨房的门上锁并闩上。
...the heavy bolted doors.
紧锁的大门
5
[VERB 动词]（常指人或动物因受惊吓）迅速逃跑，逃窜 If a person or animal bolts, they suddenly start to run very fast, often because something has frightened them.
[V]
[V prep/adv]
The pig rose squealing and bolted...
那头猪突然嗷嗷叫着狂奔起来。
I made some excuse and bolted for the exit.
我编了个借口后便向出口冲去。
6
[VERB 动词]狼吞虎咽 If you bolt your food, you eat it so quickly that you hardly chew it or taste it.
[V n]
[V P n (not pron)]
[Also V n P]
Being under stress can cause you to miss meals, eat on the move, or bolt your food.
人在压力之下有时会吃不上饭，或边走边吃，或是匆匆吃上几口。
Bolt down means the same as bolt .bolt down同bolt
Back then I could bolt down three or four burgers and a pile of French fries.
那时我一顿能吃下三四个汉堡和一大堆炸薯条。
7
[N-COUNT 可数名词]一道（闪电） A bolt of lightning is a flash of lightning that is seen as a white line in the sky.
[N of n]
Suddenly a bolt of lightning crackled through the sky.
突然一道闪电划破长空。
8
[N-COUNT 可数名词]（布的）一匹，一卷 A bolt of cloth is a long wide piece of it that is wound into a roll round a piece of cardboard.
[usu N of n]
...bolts of black silk.
成匹的黑丝绸
9
[VERB 动词]（蔬菜）生长过快，结实过早（而不宜食用） When vegetables such as lettuces or onions bolt, they grow too quickly and produce flowers and seeds, and therefore become less good to eat.
[V]
If the soil dries out the plants may bolt.
如果土壤过干，植株可能会过早结实。
10
[PHRASE 短语]突然逃跑；慌忙逃窜 If someone makes a bolt for somewhere, or makes a bolt for it, they make a sudden escape.
[V inflects]
His father kept a tight grip on his collar in case he should make a bolt for the door.
他的父亲紧紧抓住他的衣领，防止他夺门而逃。
11
[PHRASE 短语]晴天霹雳；出人意表；令人大吃一惊 If a piece of news comes like a bolt from the blue, it is completely unexpected and very surprising.
The company decided to appoint a Japanese manager as president of the company. The decision came as a bolt from the blue.
公司决定任命一位日籍经理担任总裁。这个决定太出乎意料了。
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[PHRASE 短语]挺直地；笔直地 If someone is sitting or standing bolt upright, they are sitting or standing very straight.
[usu v PHR]
When I pushed his door open, Trevor was sitting bolt upright in bed.
当我推开特雷弗的房门时，他正腰杆笔直地坐在床上。
13
nuts and bolts→see:
nut
； to close the stable door after the horse has bolted→see:
stable
；
相关词组：
bolt down
Oxford
bolt/bəʊlt; NAmEboʊlt/
noun
,
verb
,
adverb
boltboltsboltedboltingnoun _bolt_comp.jpg _bolt.jpg 1a long, narrow piece of metal that you slide across the inside of a door or window in order to lock it （门窗的）闩，插销2a piece of metal like a screw without a point which is used with a circle of metal (= a nut) to fasten things together 螺栓◆nuts and bolts螺帽和螺栓3~ of lightninga sudden flash of lightningin the sky, appearing as a line 闪电4a short heavy arrow shot from a crossbow弩箭5a long piece of cloth wound in a roll around a piece of cardboard 一匹布IDIOMSa ˌbolt from the ˈbluean event or a piece of news which is sudden and unexpected; a complete surprise 突如其来的事件（或消息）；晴天霹雳◆Her dismissal came as a bolt from the blue.她的解雇简直就是晴天霹雳。make a ˈbolt for sth | make a ˈbolt for itto run away very fast, in order to escape 迅速逃跑；溜走☞more at
nut
n.,
shoot
v.verb1[transitive , intransitive ]bolt(sth) to fasten sth such as a door or window by sliding a boltacross; to be able to be fastened in this way 用插销闩上；能被闩上◆Don't forget to bolt the door.别忘了闩门。◆The gate bolts on the inside.大门在里面上闩。2[transitive ]to fasten things together with a bolt用螺栓（把甲和乙）固定在一起boltA to B ◆The vice is bolted to the workbench.这虎钳是用螺栓固定在工作枱上的。boltA and B together ◆The various parts of the car are then bolted together.然后汽车的各种部件便用螺栓装配在一起。3[intransitive ]if an animal, especially a horse, bolts,it suddenly runs away because it is frightened （马等受惊）脱缰4[intransitive ](+ adv./prep.)(of a person 人)to run away, especially in order to escape 跑开；（尤指）逃跑◆When he saw the police arrive, he bolted down an alley.他看见警察来了，便从小巷逃走了。5[transitive ]boltsth (down) to eat sth very quickly 狼吞虎咽◆Don't bolt your food!吃饭不能狼吞虎咽！6( NAmE) [transitive , intransitive ]bolt(sth) to stop supporting a particular group or political party 停止支持（某团体或政党）◆Many Democrats bolted the party to vote Republican.很多民主党人放弃本党，转而投共和党的票。7[intransitive ](of a plant, especially a vegetable 植物，尤指蔬菜)to grow too quickly and start producing seeds and so become less good to eat 过早结实（因而食用价值降低）IDIOMsee
stable door
n.adverbIDIOMsit/stand bolt ˈuprightto sit or stand with your back straight 背部笔挺地坐╱站；坐╱站得笔直bolt/bəʊlt; NAmEboʊlt/
LDC
bolt1 noun
bolt2 verb
bolt3 adverb
boltbolt1 /bəʊlt $ boʊlt/ ●●○ noun [countable]
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Word Origin
Examples
word sets
Collocations
Phrases
1bolt (2)lock a metal bar that you slide across a door or window to fasten it2screw a screw with a flat head and no point, for fastening things together3a bolt from/out of the blue news that is sudden and unexpected: Was this money a bolt from the blue or did you know you were going to get it?4bolt of lightning lightning that appears as a white line in the sky: There’s not much left of his house after it was struck by a bolt of lightning. →
thunderbolt
5make a bolt for it British English to suddenly try to escape from somewhere: They attacked the driver and he straightaway made a bolt for it.6weapon a short heavy arrow that is fired from a crossbow7cloth a large long roll of cloth → have shot your bolt
at shoot1(24)
, → the nuts and bolts of something
at nut1(6)
bolt1 noun
bolt2 verb
bolt3 adverb
boltbolt2 ●○○ verb
Verb Table
Examples
Thesaurus
Collocations
Phrases
1[intransitive] to suddenly run somewhere very quickly, especially in order to escape or because you are frightened: The horse reared up and bolted. Kevin had bolted through the open window.► see thesaurus at
run
2[transitive] (also bolt down) to eat very quicklySYN gobble: He bolted down his breakfast.3[transitive] to fasten two things together using a boltbolt something to something The cell contained an iron bedframe bolted to the floor.bolt something together The boxes were made of heavy panels of metal bolted together.4[transitive] to lock a door or window by sliding a bolt across
bolt1 noun
bolt2 verb
bolt3 adverb
boltbolt3 adverb
Examples
Collocations
Phrases
sit/stand bolt upright to sit or stand with your back very straight, often because something has frightened you: She sat bolt upright in the back seat.