'suck in' definitions:

Definition of 'suck in'

From: WordNet
verb
Take up as if with a sponge [syn: take in, sop up, suck in, take up]
verb
Attract by using an inexorable force, inducement, etc.; "The current boom in the economy sucked many workers in from abroad" [syn: suck, suck in]
verb
Draw in as if by suction; "suck in your cheeks and stomach" [syn: suck in, draw in]