sucking

To use the mouth and lips to pull in (a liquid, especially milk from the breast).

To perform such an action; to feed from a breast or teat.

To put the mouth or lips to (a breast, a mother etc.) to draw in milk.

To extract, draw in (a substance) from or out of something.

To work the lips and tongue on (an object) to extract moisture or nourishment; to absorb (something) in the mouth.

To pull (something) in a given direction, especially without direct contact.

To perform fellatio.

To be inferior or objectionable: a general term of disparagement, sometimes used with at to indicate a particular area of deficiency.

An act of sucking.

A sound or motion that sucks.

Still nourished by the mother's milk, as an infant; suckling.

(by extension) Young and inexperienced.