A common seller of any commodity (particularly under the liquor laws of many states) is one who sells it frequently, usually, customarily, or habitually; in some states, one who is shown to have made a certain number of sales, either three or five. State v. O’Conner, 49 Me. 590; State v. Nutt. 28 Vt. 598; Moundsville v. Fountain, 27 W. Va. 194; Com. v. Tubbs, 1 Cush. (Mass.) 2.