A device that transfers thermal energy between spaces, usually between an enclosed space and the outdoors.

(biochemistry) Any protein in the membrane of a cell or mitochondrion whose function is to move protons across the membrane and thus establish an electrochemical potential.

(finance) A form of financial fraud where the fraudster buys stocks cheaply, generates excitement about those stocks to create a temporary price increase, then sells the stocks before the price goes back down.

(slang) To use a breast pump and then discard the milk, typically because one has had an infection, or has been drinking alcohol.

(idiomatic) To lift weights; to engage in weight or strength training.

A piece of equipment used for extraction of gas or vapour from an enclosed space, leaving the container with a partial vacuum.

(sports) To pretend to throw or shoot the ball in order to make a defender react.

(sports) Alternative spelling of pump fake

A device used by a lactating woman to extract milk from her breasts (typically for short-term storage).

plural of bilge pump