1US A sound made as a pin lands on a hard surface. Also figurative: something as small or inconsequential as a pin falling; a trivial incident. Compare "you could have heard a pin drop (also †fall)".
2The number of pins knocked down in a tenpin bowling game; a score in tenpin bowling.
Mid 19th century. From pin + fall, after phrases at pin.
A fall in which a wrestler must hold an opponent's shoulders down on the mat for three seconds.
Late 19th century; earliest use found in Delphos (Ohio) Daily Herald. From pin + fall.