E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Fettle,
as a verb, means to repair; to smoothe; as an adjective, it means well-knit, all right and tight. It is connected with our word feat, the French faire, the Latin facere.
1
Fettled ale, in Lancashire, means ale warmed and spiced.
