So sharp as to cause mental pain
In the act of biting
She met his gaze, biting her lip.
Biting her lip, she turned away from him and stared out the window.
"Yes," she hesitated, biting her lower lip.
Two maids were turning up the hem and hurriedly biting off the ends of thread.
Denisov sat gloomily biting his mustache and listening to the conversation, evidently with no wish to take part in it.