high·light / ˈhīˌlīt/ • n. 1. an outstanding part of an event or period of time: he views that season as the highlight of his career. ∎  (highlights) the best parts of a sporting or other event edited for broadcasting or recording: he never watches TV highlights of games he has umpired.2. a bright or reflective area in a painting, picture, or design. ∎  (usu. highlights) a bright tint in the hair, esp. one produced by bleaching or dyeing.• v. [tr.] 1. (often be highlighted) pick out and emphasize: the issues highlighted by the report speakers at the conference highlighted additional problems faced by women with AIDS. ∎  make visually prominent: a vast backdrop with the colorful logo highlighted with lasers. ∎  mark with a highlighter: a photocopy with sections highlighted in green.2. create highlights in (hair).

high·light·er / ˈhīˌlītər/ • n. 1. a broad felt-tipped pen used to overlay transparent fluorescent color on text or a part of an illustration, leaving it legible and emphasized.2. a cosmetic that is lighter than the wearer's foundation or skin, used to emphasize features such as the eyes or cheekbones.

highlight
1. The portion of light from a surface that is due to specular reflection and transmission.

2. See highlighting.