What is the definition of grimace?

A grimace is a facial expression of pain, disgust, or disapproval. It often involves contorting the face, particularly the mouth and nose, into an unpleasant or awkward shape.

Here are some examples of what a grimace might look like:

* Pain: A person might grimace when they experience physical pain, such as a headache or a toothache.

* Disgust: A person might grimace when they see something unpleasant, such as a dirty plate or a rotten fruit.

* Disapproval: A person might grimace when they are displeased with something, such as a rude comment or a bad joke.

The exact form of a grimace can vary depending on the emotion being expressed, but it generally involves a combination of furrowed brows, tightened lips, and a wrinkled nose.