noun

1. 1. a part on which light is brightest the highlights on the cheeks
   2. a part of a painting, photograph, etc. on which light is represented as brightest
   3. the representation or effect of such light in a painting, photograph, etc.
      also high light
2. the most important, interesting, or outstanding part, scene, etc.

transitive verb

1. to give a highlight or highlights to
2. to give prominence to; emphasize
3. to mark with a highlighter
4. to be the most outstanding in