1530s, nyppell, "teat, duct-laden extremity of a mammalian breast," alteration of neble (1520s), probably diminutive of neb "bill, beak, snout" (see neb), hence, literally "a small projection." In reference to an artificial device on an infant's bottle, from 1875. A 16c.-17c. slang term for a woman's nipples was cherrilets.
例文
1. Strict adherence to nipple hygiene is essential during breast feeding.
授乳期には**の清潔衛生を厳密に維持しなければならない。
2.The nipple is surrounded by pigmented circular skin called the areola.
**周囲の色が濃い部位を乳輪と呼ぶ。
3. Nipple inversion is quite common in normal breasts.
**内が通常の**にはまることもよくあります。
4.Feeding time should last as long as the same amount was fed by nipple .
与える時間は、赤ちゃんが乳首から同じ量を吸うのに必要な時間と等しくなければならない。
5.This unique form of breast cancer begins as a weeping eczematoid lesion of the nipple .