gyle noun. [gʌɪl] ME.
[Middle Dutch ghijl (Dutch gijl) rel. to gijlen ferment; ult. origin unkn.]
Brewing.
1. Wort in the process of fermentation. (Earliest in gyle-fat below.) ME.

2. A brewing; the quantity of beer or ale brewed at one time. L16.

Comb.:
gyle-fat (obsolete exc. Scot. & dial.) = gyle-tun below; gyle-kier (obsolete exc. dial.) a tub or other vessel for holding wort; the wort itself; gyle-tun a vat in which the wort is left to ferment.

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