white meat (n.)youdaoicibaDictYouDict[white meat 词源字典]
"meat of poultry, pigs, etc.," as opposed to red meat, 1752, from white (adj.) + meat (n.). Earlier it meant "foods prepared from milk" (early 15c.). Black slang sense of "white women as sex partners" is from 1920s.[white meat etymology, white meat origin, 英语词源]