Definition of: sucker

(suk′ər) noun
1. One who or that which sucks; a suckler, as a suckling pig or a newly born whale.
2. A North American fresh–water fish (family Catostomidae), related to the cyprinoids, having the mouth usually protractile with thick and fleshy lips adapted for sucking in food.
3. Zool. An organ by which an animal adheres to other bodies; a suctorial organ.
4. Slang A toady; sponger; parasite; hanger–on.
5. U.S. Slang A foolish fellow; dolt; one easily deceived; a gull.
6. A piston, as of a syringe or a suction pump; a tube or pipe used for suction.
7. Bot. a A shoot or branch originating on a subterranean portion of a stem, b A shoot or sprout arising from the root near or remote from the trunk of certain trees.
8. A haustorium.
9. A sweetmeat; also, sugar.
—v.t. To strip of suckers or shoots.
—v.i. To form or send out suckers or shoots. [<SUCK]