shark /ʃɑːk $ ʃɑːrk/
noun [countable][
Sense 1: Date: 1400-1500;
Origin: Origin unknown. ]
[
Sense 2: Date: 1500-1600;
Origin: Probably from German schurke 'bad man'; influenced by ⇒ shark(1)]
1. a large sea fish with several rows of very sharp teeth that is considered to be dangerous to humans:
Sharks were circling around our boat.shark-infested waters (=waters where there are a lot of sharks)2. informal someone who cheats other people out of money
pool/card shark (=someone who uses their skill at pool or cards to cheat other players out of money) ⇒
loan shark [TahlilGaran] Dictionary of Contemporary English ▲