- any of a group of elongate elasmobranch, mostly marine fishes, certain species of which are large, voracious, and sometimes dangerous to humans.
- to begin a decline in quality, popularity, relevance, etc., after reaching a peak: Some TV shows have jumped the shark once a popular cast member left the show.
- a person who preys greedily on others, as by cheating or usury.
- a person who has unusual ability in a particular field.
- to obtain by trickery or fraud; steal.
- to live by shifts and stratagems.
- any of various usually ferocious selachian fishes, typically marine with a long body, two dorsal fins, rows of sharp teeth, and between five and seven gill slits on each side of the head
- a person who preys on or victimizes others, esp by swindling or extortion
- to obtain (something) by cheating or deception
