sb. [f. FAT v. + -ER1.] a. One who makes fat. † Said also of the food. † b. With adj. prefixed: An animal that grows fat (quickly, etc.). Also † fatter up.
1528. Paynell, Salernes Regim., G ij. Grene chese is a nourisher and a fatter.
1671. H. M., trans. Erasm. Colloq., 71. This Hen too, hath either had a niggardly fatter of her up, or she hath been in love, and without doubt hath lived in jealousie: which disease this kind of creature is very much troubled with.
1806. W. Taylor, in Ann. Rev., IV. 83/1. Where food is plentiful, the Java hog is the quickest fatter.
1882. Athenæum, 26 Aug., 271/2. Those who scour the country and buy up lean chickens for the fatters coop.