Merriam-Webster's Collegiate Dictionary
tes·ti·cle
\\ˈtes-ti-kəl\\ noun ETYMOLOGY Middle English testicule, from Latin testiculus, diminutive of testis
DATE 15th century
: testis
;
especially : one of a higher mammal usually with its enclosing structures
•
tes·tic·u·lar \\tes-ˈti-kyə-lər\\
adjective testicle
1590s, alteration of testicule (early 15c.), from L. testiculus, dim. of testis "testicle" (see testis). The O.E. was herþan, probably originally "leather bag" (cf. heorþa "deer-skin"). The commonest slang terms for them in other languages are words that mean "balls," "stones," "nuts," "eggs."
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
testicletes·ticle /
5testikl /
noun either of the ten organs that produce
sperm
, located in a bag of skin below the
penis
睾丸• tes·ticu·lar /
tes5tikjElE(r) /
adj. [only before noun] :
testicular cancer 睾丸癌 Webster's Third New International Dictionary, Unabridged
tes·ti·cle
\ˈtestə̇kəl, -tēk-\
noun
(
-s)
Etymology: Middle English
testicule, from Latin
testiculus, diminutive of
testis — more at
testis
: a male genital gland usually with its enclosing membranes
: testis