Webster’s Revised Unabridged Dictionary · 1913
Sup
Sup (sŭp), v. t. [imp. & p. p. Supped; p. pr. & vb. n. Supping.] [OE. soupen to drink, AS. sūpan; akin to D. zuipen, G. saufen, OHG. sūfan, Icel. sūpa, Sw. supa, Dan. söbe. Cf. Sip, Sop, Soup, Supper.] To take into the mouth with the lips, as a liquid; to take or drink by a little at a time; to sip.
There I'll sup Balm and nectar in my cup. Crashaw.
Sup, n. A small mouthful, as of liquor or broth; a little taken with the lips; a sip.
Tom Thumb had got a little sup. Drayton.
Sup, v. i. [See Supper.] To eat the evening meal; to take supper.
I do entreat that we may sup together. ?
Sup, v. t. To treat with supper. [Obs.]
Sup them well and look unto them all. Shak.