[f. BRAY v.1 + -ER1.] One who brays; esp. an ass.

1

1598.  Florio, Russo … a snorter, a brayer, one that is hoarse.

2

1728.  Pope, Dunciad, II. 246. Sound forth, my Brayers, and the welkin rend.

3

1876.  G. Roslyn, Geo. Eliot in Derbysh., 54. She had a pony and he had a donkey. He could not make the brayer go.

4