Artificial intelligent assistant

sesterne

I. ˈsestern Obs.
    Also 5 cestron, 6 sestorne, seystarne, 7 sestron.
    [var. sester; cf. testern, var. tester1. See also sextern.]
    = sester.

1421 Coventry Leet Bk. 25 That no breuster sell no derre a Cestron ale to noo hukster but for xviij d. 1502 Arnolde Chron. 72 b/2 The tonne of burdeux..holdith in sesternes lxiij. sesternes. The..sesterne iiij. galons. 1534 in Sharp Cov. Myst. (1825) 183 A Seystarne & a halfe of ale ijs iijd. 1682 Art & Myst. Vintners 15 Every Sestron is 4 gallons.

II. sestern(e
    obs. forms of cistern.

Oxford English Dictionary

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