crabs is a form of:

Slink



verbpast tense: Slunk ; past participle: Slunk ; present participle: Slinking ; 3rd person singular present Slinks
1.
(INTRANSITIVE) (To move in a stealthy or guilty or shamefaced way) លបៗ, លិបបាត់, គេចបាត់, ធាន (លែងមាន)
Example: The leopard slinks silently through the tall grass.
ENGLISH MEANING
noun
1.
The young of a beast brought forth prematurely, esp. a calf brought forth before its time.
2.
A thievish fellow; a sneak.
adjective
1.
Produced prematurely; as, a slink calf.
verbpast tense: Slunk ; past participle: Slunk ; present participle: Slinking ; 3rd person singular present Slinks
1.
To creep away meanly; to steal away; to sneak.
2.
To miscarry; -- said of female beasts.
3.
(TRANSITIVE) To cast prematurely; -- said of female beasts; as, a cow that slinks her calf.
1.
Thin, lean