to draw (e.g. liquid) into the mouth by creating a partial vacuum with the contracted lips and tongue
to draw liquid from (something) in this way
suck an orange
to take (something) into the mouth as if sucking a liquid from it
She sucked the end of her pencil
to eat (e.g. a sweet) by means of sucking movements of the lips and tongue
to draw (something) in or up by or as if by suction
plants sucking moisture from the soil
to draw (somebody) by irresistible force
He was sucked into the conspiracy
to draw something in or up by suction, esp to draw milk from a breast or udder with the mouth
said of a pump: to draw air instead of water
chiefly NAmer, slang to be worthless or objectionable
[Old English sūcan]