stum

 
Pronunciation: /stʌm/

noun

[mass noun]
  • unfermented grape juice.

verb (stums, stumming, stummed)

[with object]
  • 1prevent or stop the fermentation of (wine) by fumigating a cask with burning sulphur.
  • 2renew the fermentation of (wine) by adding stum.

Origin:

mid 17th century: from Dutch stom (noun), stommen (verb), from stom 'dumb'