[f. TOOTH sb. + -FUL 2.] lit. As much as would fill a tooth; a small mouthful, esp. of liquor.

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a. 1774.  Fergusson, Drink Ecl., 69. Tho’ lairds tak toothfu’s o’ my warming sap.

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1821.  Joseph the Book-Man, 132.

          Need we insist—when JOSEPH landed,
A potent toothful he commanded!

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1839.  Fraser’s Mag., XIX. 474. Wiping each platter, so as not to leave One toothful of the garlic sauce behind.

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1882.  Mrs. Riddell, Pr. Wales’ Garder-P., 115. If he would be persuaded to take a toothful of brandy before beginning the evening’s duties.

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