Definition of "gyle"

gyle

/ɡaɪl/

noun
countable and uncountable, plural gyles
1. The amount of beer brewed at a time.
  Quotations
  Perkins told me Yesterday that his Guile of Beer had a Summer-head on't, like as one sees in the last Weeks of Brewing in a forward Spring:—The Phænomenon surprized him I find.
  1790 October 7, Hester Thrale Piozzi, Thraliana
2. Fermented wort used for making vinegar.