From WordNet (r) 2.0 (August 2003) [wn]:
ballock
n : one of the two male reproductive glands that produce
spermatozoa and secrete androgens; "she kicked him in the
balls and got away" [syn: testis, testicle, orchis,
ball, bollock, nut, egg]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
bollock \bollock\ n.
one of the two male reproductive glands; a testis; -- usually
spelled ballock, and usually used in the plural.
Syn: gonad, testicle, ball, nut, egg.
[WordNet 1.5 +PJC]
2. a pulley-block at the head of a topmast.
Syn: bullock block.
[WordNet 1.5]