tipple

a serving of drink (usually alcoholic) drawn from a keg

Liquor taken in tippling; drink.

An apparatus by which loaded cars are emptied by tipping; also, the place where such tipping is done.

drink moderately but regularly

To drink spirituous or strong liquors habitually; to indulge in the frequent and improper used of spirituous liquors; especially, to drink frequently in small quantities, but without absolute drunkeness.

To drink, as strong liquors, frequently or in excess.