suck verb (PULL IN)
C2 [ I or T ] to pull in liquid or air through your mouth without using your teeth, or to move the tongue and muscles of the mouth around something inside your mouth, often in order to dissolve it:
I sucked my thumb until I was seven.
› [ T + adv/prep ] Something that sucks a liquid or an object in a particular direction pulls it with great force:
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suck verb (BE BAD)
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