| Noun | 1. | sucker - a person who is gullible and easy to take advantage ofdupe, victim - a person who is tricked or swindled | |
| 2. | sucker - a shoot arising from a plant's roots | |
| 3. | sucker - a drinker who sucks (as at a nipple or through a straw)drinker - a person who drinks liquids | |
| 4. | sucker - flesh of any of numerous North American food fishes with toothless jawssucker - mostly North American freshwater fishes with a thick-lipped mouth for feeding by suction; related to carps | |
| 5. | sucker - hard candy on a stickcandy - a rich sweet made of flavored sugar and often combined with fruit or nuts | |
| 6. | sucker - an organ specialized for sucking nourishment or for adhering to objects by suctioncupule - a sucker on the feet of certain flies organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function | |
| 7. | sucker - mostly North American freshwater fishes with a thick-lipped mouth for feeding by suction; related to carpscatostomid - a cypriniform fish of the family Catostomidae sucker - flesh of any of numerous North American food fishes with toothless jaws | |