\ ˈstəm\
stummed; stummed; stumming; stums

Definition of stum

 (Entry 1 of 2)

archaic
: to renew (wine) by mixing with must and reviving fermentation

stum

noun
\ "\
plural -s

Definition of stum (Entry 2 of 2)

: unfermented or partly fermented grape juice especially : must in which fermentation has been artificially arrested

History and Etymology for stum

Transitive verb

Dutch stommen, from stom, noun

Noun

Dutch stom (approximate translation of French muet in vin muet stum), from stom, adjective, mute, from Middle Dutch; akin to Old Frisian stumm mute, Old High German stum mute, Old English stamerian to stammer

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