雌し雄ゆう

noun

male and female; the two sexes

Primarily used for animals; can also refer to the two sexes more broadly.

• この鳥とりの雌し雄ゆうを見み分わけるのは難むずかしい。

  It is difficult to distinguish the male and female of this bird.

noun

victory and defeat; strengths and weaknesses

Often used in the phrase 雌雄を決する (to fight it out, to decide the outcome).