noun An area or a spot in a drawing, painting, or photograph that is strongly illuminated.
noun An especially significant or interesting detail or event or period of time.
Meeting my future wife was the highlight of my trip to Spain.
noun A strand or spot of hair dyed a different color than the rest.
verb To make prominent; emphasize.
verb To be a highlight of.
verb To mark (important passages of text), e.g. with a fluorescent marker pen or in a wordprocessor, as a means of memory retention or for later reference.
verb To dye (part of the hair) a different color than the rest.
verb To seek the attention of (a user) on IRC by mentioning their name in a message, causing that message to appear highlighted on their screen.