also: ちちにく
noun
Only with reading にゅうにく
Culinary term for white meat from the breast of poultry, especially chicken. Not used for mammalian meat.
鶏の乳肉はさっぱりしていてヘルシーだ。
Chicken breast meat is light and healthy.
noun
big boobs; huge tits
Vulgar slang referring to large breasts. Often used in crude or sexual contexts. Can be read as にゅうにく or ちちにく.
あのAV女優は乳肉がすごい。
That AV actress has huge tits.
Compound of 乳 (chichi, 'breast; milk') and 肉 (niku, 'meat'). The reading にゅうにく uses the on'yomi of 乳, while ちちにく uses the kun'yomi. The slang sense is a direct metaphorical extension of the literal meaning.