/ grɪˈmeɪs; NAmE ; ˈgrɪməs/ verb , noun
■ verb
[ v ] grimace (at sb/sth) to make an ugly expression with your face to show pain, disgust, etc. :
He grimaced at the bitter taste.
She grimaced as the needle went in.
■ noun
an ugly expression made by twisting your face, used to show pain, disgust, etc. or to make sb laugh :
to make / give a grimace of pain
'What's that?' she asked with a grimace.
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WORD ORIGIN
mid 17th cent.: from French , from Spanish grimazo caricature, from grima fright.