variable

(noun): Something that is variable.
(noun): Something whose value may be dictated or discovered.
(noun): A quantity that may assume any one of a set of values.
(noun): A symbol representing a variable.
(noun): A named memory location in which a program can store intermediate results and from which it can read them.
(noun): A variable star.
(noun): A shifting wind, or one that varies in force.
(noun): (in the plural) Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.
(adjective): Able to vary or be varied.
(adjective): Likely to vary.
(adjective): Marked by diversity or difference.
(adjective): Having no fixed quantitative value.
(adjective): Tending to deviate from a normal or recognized type.