0 present participle of grimace
1 to make an expression of pain, strong dislike, etc. in which the face twists in an ugly way:
Sometimes only partial materialization was achieved, with grimacing faces, flapping hands, and so on poking out from the cabinet.
Correction of cosmetic defects can restore a recluse to normal social life: examples include facial asymmetry or involuntary grimacing, or limb distortions.
Affective alterations in catatonia include strong anxieties or euphoria/happiness, staring, grimacing, and inadequate emotional reactions.
Prkachin makes a strong point, borne out by empirical work, of the distinctness of various pain behaviours such as facial grimacing, touching and rubbing, guarded movement, and sounds.
I have never found that grimacing is a good substitute for argument.
He may be grimacing even more in a minute.
He blames the world, not himself, for getting it wrong, and we heard it again today, although he sits there grimacing.
It is no good grimacing like that.