[Deriv. uncertain: cf. F. brayer in various technical senses; or ? BRAY v.2] Part of a compound lever for raising or depressing the ‘runner’ or upper grindstone in a corn-mill, being the transverse piece which supports the end of the ‘bridge-tree.’
1770. J. Ferguson, Lect. (1805), I. 83. The end S is let into a beam Q R, called the brayer.
1822. Imison, Sc. & Art, I. 69. The end M of the brayer is raised or depressed at pleasure.
