Definition of "etch" in English

verb

1. To cut into a surface with an acid or other corrosive substance in order to make a pattern. Best known as a technique for creating printing plates, but also used for decoration on metal, and, in modern industry, to make circuit boards.

2. To engrave a surface.

3. (figuratively) To make a lasting impression.

   • The memory of 9/11 is etched into my mind.

4. To sketch; to delineate.

noun

1. Obsolete form of eddish.