Merriam-Webster Collegiate Dictionary - pump up

 transitive verb  Date: 1791  1.  a. to fill with enthusiasm or excitement  b. to fill with or as if with air ; inflate  2. increase 1 PUMP  I. noun  Etymology: Middle English ~e, pompe; akin to Middle Low German ~e ~, Middle Dutch pompe  Date: 15th century  1. a device that raises, transfers, delivers, or compresses fluids or that attenuates gases especially by suction or pressure or both  2. heart  3. an act or the process of ~ing  4. an energy source (as light) for ~ing atoms or molecules  5. a biological mechanism by which atoms, ions, or molecules are transported across cell membranes — compare sodium ~  II. verb  Date: 1508  intransitive verb  1. to work a ~ ; raise or move a fluid with a ~  2. to exert oneself to ~ or as if to ~ something  3. to move in a manner that resembles the action of a ~ handle  transitive verb  1.  a. to raise (as water) with a ~  b. to draw fluid from with a ~  2. to pour forth, deliver, or draw with or as if with a ~ ~ed money into the economy ~ new life into the classroom  3.  a. to question persistently ~ed him for the information  b. to elicit by persistent questioning  4.  a. to operate by manipulating a lever  b. to manipulate as if operating a ~ handle ~ed my hand warmly  c. to cause to move with an action resembling that of a ~ handle a runner ~ing her arms  5. to transport (as ions) against a concentration gradient by the expenditure of energy  6.  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 ~ing  III. noun  Etymology: origin unknown  Date: 1555 a shoe that grips the foot chiefly at the toe and heel; especially a close-fitting woman's dress shoe with a moderate to high heel