1. To draw, as a liquid, by the action of the mouth and tongue, which tends to produce a vacuum, and causes the liquid to rush in by atmospheric pressure; to draw, or apply force to, by exhausting the air.
2. To draw liquid from by the action of the mouth; as, to suck an orange; specifically, to draw milk from (the mother, the breast, etc) with the mouth; as, the young of an animal sucks the mother, or dam; an infant sucks the breast.
3. To draw in, or imbibe, by any process resembles sucking; to inhale; to absorb; as, to suck in air; the roots of plants suck water from the ground.
4. To draw or drain. Old ocean, sucked through the porous globe. (Thomson)
5. To draw in, as a whirlpool; to swallow up. As waters are by whirlpools sucked and drawn. (Dryden) To suck in, to draw into the mouth; to imbibe; to absorb. To suck out, to draw out with the mouth; to empty by suction. To suck up, to draw into the mouth; to draw up by suction absorption.
Origin: OE. Suken, souken, AS. Scan, sgan; akin to D. Zuigen, G. Saugen, OHG. Sgan, Icel. Sga, sjga, Sw. Suga, Dan. Suge, L. Sugere. Cf. Honeysuckle, Soak, Succulent, Suction.