E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
called in Somersetshire skimmity-riding, and by the Basques toberac. A ceremony which takes place after sunset, when the performers, to show their indignation against some man or woman who has outraged propriety, assemble before the house, and make an appalling din with bells, horns, tin pans, and other noisy instruments.