Stŭm1, n.
n. [D. stom, must, new wort. Cf. Stoom.] 1. Unfermented grape-juice or wine, often used to raise fermentation in dead or vapid wines; must. Let our wines, without mixture or stum, be all fine. B. Jonson. Bad affections (like stum or poison) are impetuous. Barrow. 2. Wine revived by new fermentation, resulting from the admixture of must. Hudibras.