Definition from Wiktionary, the free dictionary
- (transitive) To absorb (fluid).
- The dry soil sucked up water like a sponge.
- (slang, chiefly with "to") To adulate or flatter somebody excessively, generally to obtain some personal benefit or favour.
- Jimmy sucked up to the English teacher hoping he would get an A.
to absorb fluid
to adulate or flatter excessively