Stoup \Stoup\, n. [See Stoop a vessel.]1. A flagon; a vessel or measure for liquids. [Scot.]
2. (Eccl.) A basin at the entrance of Roman Catholic churches for containing the holy water with which those who enter, dipping their fingers in it, cross themselves; -- called also holy-water stoup.
Source: Webster's Revised Unabridged Dictionary (1913)
Stoop \Stoop\, n. [OE. stope, Icel. staup; akin to AS. ste['a]p, D. stoop, G. stauf, OHG. stouph.] A vessel of liquor; a flagon. [Written also stoup.]
Fetch me a stoop of liquor. --Shak.