(programming) An evaluation strategy where arguments passed to a function can be mutated in a way that is visible to the caller (unlike call-by-value) but access is not given to the specific variables passed as arguments (unlike call-by-reference).

(finance) An option to buy a stated quantity of an asset or financial product, such as stock, at a stated price (the strike price), on a stated future date (or range of dates); contrasted with put option.

A button used to request assistance. / A button used to request a walk signal at a pedestrian crossing. / A button used to call an elevator.

plural of call button

Used other than figuratively or idiomatically: see call, cab. (summon a taxi) / (horse racing) To raise one's arm to maintain balance while riding.

(informal) A brothel.

plural of call house

plural of call-girl

Of an animal, not responsive to imitated calls made by a hunter.

(banking, finance) Money that is loaned by a financial institution and is recallable on demand.