We found 27 dictionaries that define the word pumping:

General (15 matching dictionaries)

1. pumping: Merriam-Webster
2. pumping: Collins English Dictionary
3. pumping: Vocabulary.com
4. Pumping, pumping: Wordnik
5. pumping: Cambridge Advanced Learner's Dictionary
6. pumping: Wiktionary
7. pumping: Infoplease Dictionary
8. pumping: Dictionary.com
9. pumping: Cambridge Essential American English Dictionary
10. Pumping (My Heart), Pumping (audio), Pumping (computer systems), Pumping (disambiguation), Pumping (oil well), Pumping: Wikipedia, the Free Encyclopedia
11. Pumping, pumping: Online Plain Text English Dictionary
12. pumping: Webster's Revised Unabridged, 1913 Edition
13. pumping: AllWords.com Multi-Lingual Dictionary
14. pumping: FreeDictionary.org
15. Pumping: TheFreeDictionary.com

Computing (1 matching dictionary)

16. pumping: Encyclopedia

Medicine (2 matching dictionaries)

17. pumping: Merriam-Webster Medical Dictionary
18. pumping: Medical dictionary

Miscellaneous (1 matching dictionary)

19. pumping: Idioms

Science (1 matching dictionary)

20. Pumping: Extragalactic Astronomy

Slang (3 matching dictionaries)

21. pumping: English slang and colloquialisms used in the United Kingdom
22. Pumping: Street Terms: Drugs and the Drug Trade
23. Pumping: Urban Dictionary

Sports (1 matching dictionary)

24. Pumping: Sports Definitions

Tech (3 matching dictionaries)

25. AUTOMOTIVE TERMS (No longer online)
26. Glossary of Meteorology (No longer online)
27. Sweetwater Music (No longer online)

(Note: See pump as well.)

Definitions from Wiktionary (pumping) ▸ noun:  The act by which something is pumped. ▸ noun:  The act of injecting silicone into the body to try to achieve a fuller or curvier look. Similar: ticker, heart, pumpage, force pump, pulsing, air pump, pumpjack, compression pump, pressurization, bull pump, more... Opposite: draining, siphoning, emptying, withdrawing, releasing Types: breast pumping, water pumping, air pumping, heart pumping, hydraulic pumping, peristaltic pumping, centrifugal pumping, more... Phrases: pumping station, pumping stations, pumping out, Optical pumping, Water pumping, more... Adjectives: optical, well, aortic, operative, modern, direct, lift, charge, total, self, sludge Colors:     red,     crimson,     scarlet,     ruby,     vermilion, more... ▸ Words similar to pumping ▸ Usage examples for pumping ▸ Idioms related to pumping ▸ Wikipedia articles (New!) ▸ Popular adjectives describing pumping ▸ Words that often appear near pumping ▸ Rhymes of pumping ▸ Invented words related to pumping