highlighter
- A fluorescent pen used to mark important passages of text by coloring them with a transparent color. nounShe used a highlighter to mark the key points in her textbook.The teacher recommended using a highlighter to emphasize important information in the notes.
- A cosmetic product used to accentuate certain features of the face by adding a luminous glow. nounShe applied highlighter to her cheekbones for a radiant look.The makeup artist used a highlighter to enhance the model's features under the studio lights.