E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Light.
Life. Othello says, Put out the light and then put out the light. In May, 1886, Abraham Harper, a market-gardener, of Oxford, hit his wife in the face, and threatened to put her light out, for which he was fined 5s. and costs. (Truth, May 20th, 1886.)