Highlighting meaning : To make prominent; emphasize. To be a highlight of. 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. To dye (part of the hair) a different color than the rest. 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. The visual emphasis of text by means of a highlight. An area of the skin or hair containing highlights. Causing emphasis, drawing attention; revealing.