shark: Meaning and Definition of

shark

1. any of a group of elongate elasmobranch, mostly marine fishes, certain species of which are large, voracious, and sometimes dangerous to humans.

shark

1. a person who preys greedily on others, as by cheating or usury.
2. a person who has unusual ability in a particular field.

1. to obtain by trickery or fraud; steal.

1. to live by shifts and stratagems.