stum(redirected from stumming)
Also found in: Idioms.
1. Unfermented or partly fermented grape juice; must.
2. Vapid wine renewed by an admixture of stum.
tr.v. stummed, stum·ming, stums
To ferment (vapid wine) by adding stum.
[Dutch stom, dumb, stum, from Middle Dutch.]
1. (Brewing) a less common word for must3
2. (Brewing) partly fermented wine added to fermented wine as a preservative
vb, stums, stumming or stummed
(Brewing) to preserve (wine) by adding stum
[C17: from Dutch stom dumb; related to German stumm]
Past participle: stummed