society > travel > means of travel > a conveyance > vehicle > cart, carriage, or wagon > parts of cart or carriage > [noun] > part to which animals are yoked
1688 R. Holme iii. 339/2 The waine Cop, that part which the hinder Oxen are yoked unto to draw the Waine.
1704 at Cart The Wain-Cope, is a long piece that comes out from the Wain-body, to which Oxen are fastned.