[secondary sex characteristic] n (1927): a physical characteristic (as the breasts of a female mammal or the breeding plumage of a male bird) that appears in members of one sex at puberty or in seasonal breeders at the breeding season and is not directly concerned with reproduction--called also secondary sexual characteristic
SECONDARY SEX CHARACTERISTIC
Meaning of SECONDARY SEX CHARACTERISTIC in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012