Meaning of sucker

Definition of sucker

(noun) a person who is gullible and easy to take advantage of
a shoot arising from a plant's roots
a drinker who sucks (as at a nipple or through a straw)
flesh of any of numerous North American food fishes with toothless jaws
an organ specialized for sucking nourishment or for adhering to objects by suction
mostly North American freshwater fishes with a thick-lipped mouth for feeding by suction; related to carps

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