marker

UK: ˈmɑːkə | US: ˈmɑːrkər

Definition

  1. n. a tool or object used to make marks (e.g., a pen or sign)

  2. n. a distinguishing feature or indicator

  3. n. a person or object that marks a boundary or position

Structure
mark <to make a visible trace>er <agent noun suffix>
Etymology

The word "marker" derives from the verb "mark," which originates from Old English "mearcian" (to trace or designate), itself from Proto-Germanic *markōną. The suffix "-er" (from Old English "-ere") denotes an agent or tool, transforming the action into an object or person performing it. Thus, "marker" literally means "something that marks." Over time, its usage expanded to include symbolic indicators (e.g., genetic markers) and physical tools (e.g., felt-tip markers).

Examples

  1. She used a red marker to highlight the important text.

  2. The stone served as a marker for the ancient burial site.

  3. His leadership became a marker of the company’s success.

  4. Genetic markers help scientists identify inherited traits.

  5. The runner passed the 10-kilometer marker in record time.