What is the meaning of Sup?

To sip; to take a small amount of food or drink into the mouth, especially with a spoon.

A sip; a small amount of food or drink.

To eat supper.

what's up (either as a greeting or actual question)

Being or relating to the squark that is the superpartner of an up quark.

Supremum, upper limit.

a standup paddleboard

soup (primarily liquid food)

stand up paddleboard

(a (complete) drinking of) a drink of hard liquor, a drink

(a (complete) drinking of) a small amount of hard liquor, typically aquavit or another clear liquor, served in a small glass

a gulp or small quantity of liquid

Source: wiktionary.org

See also