
[Alteration of Middle English pastron, hobble, pastern, from Old French pasturon, diminutive of pasture, pasture, tether, alteration of *pastoire, from Latin pāstōria, feminine sing. of pāstōrius, of herdsmen, from pāstor, shepherd. See pastor.]
In ungulates the segment of the limb between the fetlock and hoof, supported by proximal and middle phalanges; in dogs the metacarpal region.