She was mostly gristle and bone when we saw her, lying in the sun with her legs spread and a grimace on her face.
I hold onto his arm and lift him while he closes his eyes and tries not to grimace.
I gave him some brandy from my medicinal store, which he drank with a grimace.
1650s, from French grimace, from Middle French grimache, from Old French grimuce "grotesque face, ugly mug," possibly from Frankish (cf. Old Saxon grima "face mask," Old English grima "mask, helmet"), from same Germanic root as grim (adj.). With pejorative suffix -azo (from Latin -aceus).
1762, from French grimacer, from grimace (see grimace (n.)). Related: Grimaced; grimacing.