Etymology
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etch (v.)

1630s, "to engrave by eating away the surface of with acids," from Dutch etsen, from German ätzen "to etch," from Old High German azzon "give to eat; cause to bite, feed," from Proto-Germanic *atjanan, causative of *etanan "eat" (from PIE root *ed- "to eat"). Related: Etched; etching. The Etch A Sketch drawing toy was introduced 1960 by Ohio Art Company.

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Definitions of etch

etch (v.)
make an etching of;
He etched her image into the surface
etch (v.)
cause to stand out or be clearly defined or visible;
a face etched with pain
the leafless branches etched against the sky
etch (v.)
carve or cut into a block used for printing or print from such a block;
Synonyms: engrave
etch (v.)
carve or cut a design or letters into;
Synonyms: engrave
etch (v.)
selectively dissolve the surface of (a semiconductor or printed circuit) with a solvent, laser, or stream of electrons;
From wordnet.princeton.edu