Sc. Obs. In 6 tersaill. [app. ad. OF. tercel, tiercel, a measure of wine (Godef.), deriv. of tiers third, TIERCE.] = TIERCE (of wine).
15[?]. Aberdeen Regr. (Jam.). Tersaill of wyne.
[1825. Jamieson, Tersaill, the third part of a pipe, a tierce.]