pump

How to sign: the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body
"he stood still, his heart thumping wildly";

Similiar / Same: ticker, heart

Categories: internal organ, viscus

Within this category: athlete's heart, biauriculate heart

pump

How to sign: a mechanical device that moves fluid or gas by pressure or suction

Categories: mechanical device

Within this category: air pump, aspirator, auxiliary pump, bicycle pump, bilge pump, centrifugal pump, force pump, gas pump, grease-gun, hand pump, heart-lung machine, hydraulic pump, lift pump, oil pump, stirrup pump, suction pump, water pump