subs. (American).A tall glass: containing twice the quantity of an ordinary tumbler: THREE-MASTED SCHOONER = a SCHOONER of extra size.
1888. Texas Siftings, 30 June. Thanks, old hoss fly, what do you say to taking a SCHOONER of beer at my expense?
1889. Daily Telegraph, 8 Feb. There is a coloured man at Derby who can swallow two quarts of molasses with as much ease as a Whyo can drink a SCHOONER of beer, and in about the same time.
See PRAIRIE SCHOONER.