sup

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To eat or drink (something) or engage in eating or drinking by taking small swallows or mouthfuls: supped the hot soup; supped away daintily.
2. n. A small swallow or mouthful of liquid food; a sip.
3. v. To eat an evening meal; have supper.

Century Dictionary and Cyclopedia

1. To take into the mouth with the lips, as a liquid; take or drink by a little at a time; sip.
2. To eat with a spoon.
3. To treat with supper; give a supper to; furnish supper for.
4. To eat the evening meal; take supper; in the Bible, to take the principal meal of the day (a late dinner).
5. To take in liquid with the lips; sip.
6. To eat with a spoon.
7. n. A small mouthful, as of liquor or broth; a little taken with the lips; a sip.
8. An abbreviation of superfine
9. of superior;
10. of superlative
11. of supine
12. of supplement
13. of supra
14. of supreme.

Wiktionary

1. n. mathematics supremum
2. v. To sip; to take a small amount of food or drink into the mouth, especially with a spoon.
3. n. A sip; a small amount of food or drink.
4. v. To take supper.
5. interj. slang what's up (either as a greeting or actual question).

GNU Webster's 1913

1. v. To take into the mouth with the lips, as a liquid; to take or drink by a little at a time; to sip.
2. n. A small mouthful, as of liquor or broth; a little taken with the lips; a sip.
3. v. To eat the evening meal; to take supper.
4. v. obsolete To treat with supper.

WordNet 3.0

1. n. a small amount of liquid food
2. v. take solid or liquid food into the mouth a little at a time either by drinking or by eating with a spoon