生殖器的英語是genitals。
genitals常用作名詞，有生殖器；外陰部等含義。
雙語例句
1. 尼爾想都沒想就用手捂住了他的外生殖器。
Without thinking，Neil cupped his hands over his genitals.
2. 對它們的結構進行了詳細的研究，直至內部的足尖，後肢和生殖器。
Their structure has been studied in detail up to internal apodemes，hindwings，and genitalia.
3. 佈拉瓦夫人寫了一本關於反對男性陵含歷生殖器崇拜的冊子。
Madame Blavatsky wrote a pamphlet against phallicism.
4. 許多整形醫院都可以為外生殖器進行手術。
尺搜
Many plastic surgery hospitals can operate on genitals.
5. 應格外注意生殖器的衛生。
The hygiene of genitals should be paid extra attention.
6. 常人想成為太監必先去勢，即割掉老扮生殖器。
If ordinary people want to become eunuchs，they must first castrate，that is，to cut off their genitals.