2.a white, crystalline, sweet, water-soluble commercial form of this compound obtained from whey and used in infant feedings, in confections and other foods, in bacteriological media, and in pharmacology as a diluent. Also calledmilk sugar. ...
milk tooth- one of the first temporary teeth of a young mammal (one of 20 in children) baby tooth,deciduous tooth,primary tooth child's body- the body of a human child tooth- hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense ...