n.
Pronunciation: ' ka-l ə -p ə r
Function: noun
Etymology: alteration of caliber
Date: 1588
1 a : any of various measuring instruments having two usually adjustable arms, legs, or jaws used especially to measure diameter or thickness ― usually used in plural <a pair of caliper s > b : a device for pressing a frictional material (as a brake pad) against the sides of a rotating wheel or disc
2 : thickness especially of paper, cardboard, or a tree
caliper 1a