Open English Wordnet
Nouns
(n)spanthe complete duration of something“the job was finished in the span of an hour” (n)spanthe distance or interval between two points (n)couple, pair, twosome, twain, brace, span, yoke, couplet, distich, duo, duet, dyad, duadtwo items of the same kind (n)spana unit of length based on the width of the expanded human hand (usually taken as 9 inches) (n)bridge, spana structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc. Verbs
(v)cross, traverse, span, sweepto 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”