1. in milk : adv. 在授乳期中；
2. cry over spilt milk : 作无益的后悔；
及物动词
不及物动词
1. (牛、羊等的)奶
Milk is the white liquid produced by cows, goats, and some other animals, which people drink and use to make butter, cheese, and yoghurt.
2. 给（牛、羊）挤奶；挤…的奶
If someone milks a cow or goat, they get milk from it, using either their hands or a machine.
1. produced by mammary glands of female mammals for feeding their young
2. a white nutritious liquid secreted by mammals and used as food by human beings
3. any of several nutritive milklike liquids