A soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol K) with an atomic number of 19 and atomic weight of 39.0983. The symbol is derived from the Latin kalium.

(soccer, dated) A player who plays wide on the left side of midfield

Unable to be exhausted; having an endless supply; inexhaustible. / (of an automobile or similar machine) Not producing exhaust; nonpolluting.

Celebratory; festive.