Definition of caliper
(Entry 1 of 2)
1a
: 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 calipers
b
: a device for pressing a frictional material (such as a brake pad) against the sides of a rotating wheel or disc
2
: thickness especially of paper, cardboard, or a tree
caliper
verbDefinition of caliper (Entry 2 of 2)
: to measure by or as if by calipers
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Merriam-Webster unabridged
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Time Traveler for caliper
The first known use of caliper was in 1581
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