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highlighter (EN)
noun

noun “highlighter”

singular highlighter, plural highlighters or uncountable
  1. a pen with bright ink used to mark important text
    She used a yellow highlighter to underline the key points in her textbook.
  2. a cosmetic product that reflects light to emphasize parts of the face
    The makeup artist applied highlighter to enhance her cheekbones.
  3. something that draws attention to an important fact or feature
    The presentation acted as a highlighter of the team's achievements.