A padded cushion forming part of the harness for a cart or other vehicle; = pad, n.2 2b.

the small saddle placed on the back of a cart- or carriage-horse to support the shafts; also †as v. transitive, to put a cart-saddle on, to yoke.

A pad positioned on a horse or other draught animal's back, to which the straps of the harness may be attached.

Part of the harness for a carriage, resembling a small saddle to which the shafts or traces of the carriage are attached, with terrets through…