Top definition
A person who, when reading text on a computer screen, cannot help but constantly select, deselect, and reselect the text.

This highlighting ranges from constantly clicking the text at random, highlighting the words as they are read, or highlighting the words as a bookmark to stay on track.
Jimmy is a compulsive highlighter; he constantly clicks at his computer screen even while he's just reading!
by pavementphases February 23, 2011
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