pump
2pump
viDefinition of PUMP
: to work a pump : raise or move a fluid with a pump
transitive verb
1
: to raise (as water) with a pump
2
: to draw fluid from with a pump
3
: to transport (as ions) against a concentration gradient by the expenditure of energy
4
a : to excite (as atoms or molecules) especially so as to cause emission of coherent monochromatic electromagnetic radiation (as in a laser) b : to energize (as a laser) by pumping
