魔乳

魔 (ma, “witch; demon”) +‎ 乳 (nyū, “milk; breast”).

• On’yomi: Goon
  • (Tokyo) まにゅう [mànyúú] (Heiban – [0])[1]
  • IPA^(key): [ma̠ɲ̟ɯ̟ᵝː]

魔乳 (hiragana まにゅう, rōmaji manyū)

1. witch's milk
2. (slang, uncommon) large breasts
   • 2016, “Konnani atta! ‘Deka na oppai’ no samazama na yobikata 15-sen”, in Aol News‎:

     この業界 (ぎょうかい)ではおっぱいを表 (あら)わす単 (たん)語 (ご)としてどんな言葉 (ことば)が使 (つか)われているのでしょうか。 […] 「魔 (ま)乳 (にゅう)」まがまがしいですね～。

     Kono gyōkai de wa oppai o arawasu tango to shite donna kotoba ga tsukawarete iru no deshō ka. […] “manyū” magamagashii desu ne~.

     In this world, what kind of words are used to stand for boobies? […] “Manyū (demon tits)”: Sinister, isn't it.

• (witch's milk): 鬼 (き)乳 (にゅう) (kinyū)
• (large breasts): 巨 (きょ)乳 (にゅう) (kyonyū), 爆乳 (ばくにゅう) (bakunyū), 超 (ちょう)乳 (にゅう) (chōnyū)