Definition of "Span" :

noun: the act of sitting or standing astride

noun: a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.

noun: the distance or interval between two points

noun: a unit of length based on the width of the expanded human hand (usually taken as 9 inches)

noun: two items of the same kind

noun: the complete duration of something

"The job was finished in the span of an hour."

verb: to cover or extend over an area or time period

"The parking lot spans 3 acres."