Definition of "pump" []

• A machine or device for raising, compressing, or transferring fluids. (noun)
• Physiology A molecular mechanism for the active transport of ions or molecules across a cell membrane. (noun)
• Physics Electromagnetic radiation used to raise atoms or molecules to a higher energy level. (noun)
• Informal The heart. (noun)
• To raise or cause to flow by means of a pump. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In many cases it is desirable to force water considerably above the pump itself, as, for instance, in the fire hose; under such circumstances a type of pump is employed which has received the name of _force pump_."
• "For this reason the pump has received the name of _lifting pump_."
• "After speaking with Manny about designing accessories for those on the pump, we thought it would be a great idea to start a group of 'Think Tankers' who would share their wants, needs and features they'd like to see in accessories for those who pump*"