Blade Flat Bleɪd Rotor Helicopter Grass Part Noun

• the blades of a propeller
• rotor blades on a helicopter
• not a blade of grass stirred.
• he swung the blade with all his strength.

blade

1. the flat part of a knife, tool or machine, which has a sharp edge or edges for cutting
• see also razor blade
  https://www.oxfordlearnersdictionaries.com/definition/english/razor-blade
2. one of the flat parts that turn around in an engine or on a helicopter
• the blades of a propeller
• rotor blades on a helicopter
3. the flat wide part of an oar (= one of the long poles that are used to row1 a boat) that goes in the water
4. a single flat leaf of grass
• Not a blade of grass stirred.
5. the flat metal part on the bottom of an ice skate

Extra Examples

• He swung the blade with all his strength.
• a helicopter’s rotor blades
• Knife blades are generally made of stainless steel.
• Razor blades should always be sharp.
• The machine comes with a plastic guard over the blade to protect the operator.
• The prisoner used a hacksaw blade to cut through the bars.
• The swordsmen weaved and dodged as their blades clashed over and over again.

Word Origin

• Old English blæd ‘leaf of a plant’ (also in sense (2)), of Germanic origin; related to Dutch blad and German Blatt.