Corner-Stone

kor'ner-stOn, n. the stone which unites the two walls of a building at a corner the principal stone, esp. the comer of the foundation of a building hence [fig.) something of very great importance, as that upon which other things rest. korinet, n. [lit a little horn a horn shaped trumpet formerly, a body of cavalry accompanied by a cornet-player formerly, the lowest rank of commi ioned officers in the British cavalry, corresponding to the present sub-lieutenant —n. Oornet a-pls'ton, a kind of comet with valves and pistons. [Fr. cornet, dim. of come, a horn, trumpet. See Com, {-W.) horn.] [a cornet.