noun
testicle; testis
Anatomical term for the male reproductive gland. Used in medical and biological contexts.
睾丸は男性の生殖器官の一部です。
The testicles are part of the male reproductive organs.
医者は睾丸の検査を行った。
The doctor examined the testicles.
The kanji 睾 and 丸 mean 'testicle' and 'round', respectively, reflecting the shape. The reading こうがん is the on'yomi of these characters.