From Longman Dictionary of Contemporary Englishjawsjaws[plural] a) HBthe mouth of a person or animal, especially a dangerous animal b) the two parts of a machine or tool that move together to hold something tightly → jawJawsJaws (1975) an exciting and frightening US film made by Steven Spielberg, about a shark (=a large dangerous fish) that kills people who go swimming in the sea and then tries to kill a group of men who go out in a boat to catch it