1. a person who makes grimaces; someone who twists their face into an ugly or distorted expression
Usage: informal; often used to describe someone who grimaces habitually or excessively

Examples

• The grimacer in the back row kept making funny faces during the serious presentation.
• My little brother is such a grimacer whenever he tastes something sour.
• The actor was a natural grimacer, able to contort his face for comedic effect.
• She's a grimacer when concentrating—her face scrunches up in the most amusing way.