Gauge

1. That part of a shingle, slate, or tile, which is exposed to the weather, when laid; also, one course of such shingles, slates, or tiles.
2. The depth to which a vessel sinks in the water.
3. To measure or to ascertain the contents or the capacity of, as of a pipe, barrel, or keg.
4. Any instrument for ascertaining or regulating the dimensions or forms of things; a templet or template; as, a button maker's gauge.
5. To measure the capacity, character, or ability of; to estimate; to judge of.
6. A measure; a standard of measure; an instrument to determine dimensions, distance, or capacity; a standard.
7. The quantity of plaster of Paris used with common plaster to accelerate its setting.
8. To draw into equidistant gathers by running a thread through it, as cloth or a garment.
9. Any instrument or apparatus for measuring the state of a phenomenon, or for ascertaining its numerical elements at any moment; -- usually applied to some particular instrument; as, a rain gauge; a steam gauge.
10. To measure the dimensions of, or to test the accuracy of the form of, as of a part of a gunlock.
11. Measure; dimensions; estimate.
12. Relative positions of two or more vessels with reference to the wind; as, a vessel has the weather gauge of another when on the windward side of it, and the lee gauge when on the lee side of it.
13. To measure or determine with a gauge.
14. The distance between the rails of a railway.