A sharp contortion of the face expressive of pain, contempt, or disgust.(noun)
To make a sharp contortion of the face.(verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "grimace" in a sentence
"WORDS ACCENTED ON THE LAST SYLLABLE: address _address'_ adept _adept'_ adult _adult'_ ally _ally'_ commandant _commandänt '(ä as in arm) _ contour _contour'_ dessert _dessert'_ dilate _dilate'_ excise _eksiz'_ finance _finance'_ grimace _grimace'_ importune _importune'_ occult _occult'_ pretence _pretence'_ research _research'_ robust _robust'_ romance _romance'_ tirade _tirade'_"
"He hits Neng as hard as he can, smack, kick, smack, kick, then he jumps on his knees and on to his shoulders, and there isn't a single grimace from the Thai master."
"But a fleeting grimace is soon replaced with the jovial stoicism that runs through the English like rheumatism."