To be matched, as horses.

of Spin

A pair of horses or other animals driven together;
usually, such a pair of horses when similar in color, form, and action.

To fetter, as a horse; to hobble.

To measure by the span of the hand with the fingers
extended, or with the fingers encompassing the object; as, to span a
space or distance; to span a cylinder.

A rope having its ends made fast so that a purchase can be
hooked to the bight; also, a rope made fast in the center so that both
ends can be used.

Hence, a small space or a brief portion of time.

The space from the thumb to the end of the little finger
when extended; nine inches; eighth of a fathom.

The spread or extent of an arch between its abutments, or
of a beam, girder, truss, roof, bridge, or the like, between its
supports.

To reach from one side of to the order; to stretch over as
an arch.