(1):
(n.) The act, art, or practice of engraving by means of acid which eats away lines or surfaces left unprotected in metal, glass, or the like. See Etch, v. t.
(2):
(v. t.) A design carried out by means of the above process; a pattern on metal, glass, etc., produced by etching.
(3):
(p. pr. & vb. n.) of Etch
(4):
(v. t.) An impression on paper, parchment, or other material, taken in ink from an etched plate.