vi to pass compliments; to use conventional expressions of respect.
2. compliment ·vt to praise, flatter, or gratify, by expressions of approbation, respect, or congratulation; to make or pay a compliment to.
3. compliment ·noun an expression, by word or act, of approbation, regard, confidence, civility, or admiration; a flattering speech or attention; a ceremonious greeting; as, to send one's compliments to a friend.