1700. A. Philips, Pastorals, II. ad fin. With songs the jovial hinds return from plough; And unyok’d heifers, loitering homeward, lowe.
1751. W. Whitehead, Hymn to Nymph of Bristol Spring, 146. The panting Swain … at evening led His unyok’d heifers to the common stream.
1888. A. H. Smith, Cat. Gems Brit. Mus., 191. Rustic with yoke of oxen,… the oxen unyoked from cart and lying down before it.
