( v. i. )
To set the teeth together and open the lips, or to open the mouth and withdraw the lips from the teeth, so as to show them, as in laughter, scorn, or pain.
( v. i. )
To set the teeth together and open the lips, or to open the mouth and withdraw the lips from the teeth, so as to show them, as in laughter, scorn, or pain.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012