[Sp.] A donkey.
1800. Southey, in Life (1850), II. 119. The easy pace and sure step of the John burros. Ibid. (1800), Lett. (1856), I. 129. By the aid of a burro and the good baiting-places in the way [Frequent in Southey.]
1884. F. R. Brown, in Harpers Mag., Oct., 750/2. Even pottery and singing-birds, are brought burro-back, packed in little crates.