n. a white nutritious liquid secreted by mammals and used as food by human beings
n. produced by mammary glands of female mammals for feeding their young
n. a river that rises in the Rockies in northwestern Montana and flows eastward to become a tributary of the Missouri River
n. any of several nutritive milklike liquids
n. 奶, 乳状物
vt. 挤乳, 榨取
vi. 产乳