Defined in 2 dictionaries — Kinney (1893), Burrill (1850)
George C. Kinney · 1893
fr. and old eng. A working beast;
Alexander M. Burrill · 1850
Old Eng. [L. Lat. averium, averum,] A working beast; a horse or bullock. Cowell, roc, Averia. Spelman, voc. Avera. See Avert.