1.Definition: (printing) a block of type without a raised letter; used for spacing between words or sentences

Related Noun(s):space

Category: Objects

2.Definition: a muscle of the thigh that extends the leg

Related Noun(s):quadriceps

Category: General

3.Definition: a rectangular area surrounded on all sides by buildings

Related Noun(s):quadrangle

Category: Objects

4.Definition: one of four children born at the same time from the same pregnancy

Related Noun(s):quadruplet

Category: People