كشر

كِشْرَةٌ ذ [The act of displaying the teeth, or grinning, to another: or laughing in the face of another, and looking at him in an open or a cheerful manner: ] a subst. from كَاشَرَ, (K, TA,) like هِجْرَةٌ from هَاجَرَ, and عِشْرَةٌ from عَاشَرَ. (Az, TA.)