Span

1. v. t. A pair of horses or other animals driven together; usually, such a pair of horses when similar in color, form, and action.
2. imp. & p. p. of Spin.
3. v. t. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom.
4. v. t. Hence, a small space or a brief portion of time.
5. v. t. The spread or extent of an arch between its abutments, or of a beam, girder, truss, roof, bridge, or the like, between its supports.
6. v. t. 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.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.