verb. (American university, Virginia).See quot.
1887. Lippincotts Magazine, July, p. 99. If there are many old men in the room they immediately begin to GRIN HIM; that is, they strike on their plates with their knives and forks, beat with their feet, and shout at the top of their voices, in the effort to make their victim grin. Woe to him if they succeed; for in that event the same thing will be repeated three times a day, until he ceases to notice it.
TO GRIN IN A GLASS CASE, verb. phr. (old).To be shown as an anatomical preparation. [The bodies and skeletons of criminals were once preserved in glass cases at Surgeons Hall.GROSE.]
TO FLASH THE UPRIGHT GRIN, verb. phr. (venery).To expose the person (of women).