0 past simple and past participle of grimace
1 to make an expression of pain, strong dislike, etc. in which the face twists in an ugly way:
I not only winced, but grimaced, and looked even more ugly.
She grimaced because he was speaking off-message; it was not part of the script.
Over the next four months, he gyrated, jumped, grimaced and growled at quests in the towns nearby.
She grimaced in pain but did not cry out.
Hee-dong grimaced under intense pain as he lied on the ground, head up.
Soon he grimaced and his face showed signs of intense pain.
Whillans read a few pages, then grimaced.