[grim-uh
s, gri-meys] 
noun, verb, -aced, -ac⋅ing.| 1. | a facial expression, often ugly or contorted, that indicates disapproval, pain, etc. |
| 2. | to make grimaces. |
| grim·ace (grĭm'ĭs, grĭ-mās') n. A sharp contortion of the face expressive of pain, contempt, or disgust. intr.v. grim·aced, grim·ac·ing, grim·ac·es To make a sharp contortion of the face. [French, from Old French grimache, alteration of grimuche, probably from Frankish *grīma, mask.] grim'ac·er n. |