rare. ? Obs. [f. prec. adj.: cf. to sour.]
1. trans. To make tart, to sour; † to make pungent, give pungency to (obs.).
1616. T. Scott, Christ’s Politician, 32. One sponefull of vineger will soone tart a great deale of sweete milke.
a. 1634. Randolph, Poems (1668), 28. To walk on our own ground … The best of sawce to tart our meats.
2. intr. To become tart or sour.
1629. Gaule, Holy Madn., 244. An ill Liquor that being kept too long, hath tarted and tainted the Caske.
