From The Collaborative International Dictionary of English v.0.48 [gcide]:
highlight \highlight\ v. t.
1. To emphasize or call attention to, by moving into the
foreground or otherwise making more prominent.
Syn: foreground, spotlight, play up.
[WordNet 1.5]
2. To make (part of a text or image) more prominent,
especially by making it of a lighter hue or of a different
color than the remaining part.
[PJC]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
highlight \highlight\ n.
The part of an image that has the most intense light.
[PJC]
2. The most memorable or enjoyable part; -- of events or
activities; as, the highlight of our trip was the tour of
the Vatican.
[PJC]
From WordNet (r) 3.0 (2006) [wn]:
highlight
n 1: the most interesting or memorable part; "the highlight of
the tour was our visit to the Vatican" [syn: highlight,
high spot]
2: an area of lightness in a picture [syn: highlight,
highlighting]
v 1: move into the foreground to make more visible or prominent;
"The introduction highlighted the speaker's distinguished
career in linguistics" [syn: foreground, highlight,
spotlight, play up] [ant: background, downplay,
play down]
2: apply a highlighter to one's cheeks or eyebrows in order to
make them more prominent; "highlight the area above your
eyebrows"