from
The Collaborative International Dictionary of English v.0.48
Etching \Etch"ing\, n.
1. 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.
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2. A design carried out by means of the above process; a
pattern on metal, glass, etc., produced by etching.
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3. An impression on paper, parchment, or other material,
taken in ink from an etched plate.
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{Etching figures} (Min.), markings produced on the face of a
crystal by the action of an appropriate solvent. They have
usually a definite form, and are important as revealing
the molecular structure.
{Etching needle}, a sharp-pointed steel instrument with which
lines are drawn in the ground or varnish in etching.
{Etching stitch} (Needlework), a stitch used outline
embroidery.
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