Sook

verb

1. To use the mouth and lips to pull in (a liquid, especially milk from the breast).
2. To perform such an action; to feed from a breast or teat.
3. To put the mouth or lips to (a breast, a mother etc.) to draw in milk.
4. To extract, draw in (a substance) from or out of something.
5. To work the lips and tongue on (an object) to extract moisture or nourishment; to absorb (something) in the mouth.