#1 span v. [cross, traverse, sweep] to cover or extend over an area or time period; "Rivers traverse the valley floor", "The parking lot spans 3 acres"; "The novel spans three centuries". wn
#2 span n. the complete duration of something; "the job was finished in the span of an hour". wn
#3 span n. the distance or interval between two points. wn
#4 span n. [couple, pair, twosome, twain, brace, yoke, couplet, distich, duo, duet, dyad, duad] two items of the same kind. wn
#5 span n. a unit of length based on the width of the expanded human hand (usually taken as 9 inches). wn
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