Noah Webster's New International Dictionary of the English Language

1. (v.) To creep away meanly; to steal away; to sneak.

2. (v.) To miscarry; -- said of female beasts.

3. (v. t.) To cast prematurely; -- said of female beasts; as, a cow that slinks her calf.

4. (a.) Produced prematurely; as, a slink calf.

5. (a.) Thin; lean.

6. (n.) The young of a beast brought forth prematurely, esp. a calf brought forth before its time.

7. (n.) A thievish fellow; a sneak.