Dictionary

Something, such as a glove or other pledge, thrown down as a challenge to combat (now usually figurative).

Something valuable deposited as a guarantee or pledge; security, ransom.

A subspecies of plum, Prunus domestica subsp. italica.

A measure; a standard of measure; an instrument to determine dimensions, distance, or capacity; a standard

An act of measuring.

An estimate.

Any instrument for ascertaining or regulating the level, state, dimensions or forms of things