We found 28 dictionaries that define the word drilling:

General (18 matching dictionaries)

1. drilling: Merriam-Webster
2. drilling: Collins English Dictionary
3. drilling: Vocabulary.com
4. Drilling, drilling: Wordnik
5. drilling: Cambridge Advanced Learner's Dictionary
6. drilling: Wiktionary
7. drilling: Infoplease Dictionary
8. Drilling, drilling: Dictionary.com
9. drilling: Cambridge Essential American English Dictionary
10. Drilling (disambiguation), Drilling (firearm), Drilling: Wikipedia, the Free Encyclopedia
11. Drilling: Online Plain Text English Dictionary
12. drilling: Webster's Revised Unabridged, 1913 Edition
13. drilling: Rhymezone
14. Drilling: AllWords.com Multi-Lingual Dictionary
15. drilling: Webster's 1828 Dictionary
16. drilling: FreeDictionary.org
17. drilling: Mnemonic Dictionary
18. drilling: TheFreeDictionary.com

Business (2 matching dictionaries)

19. Drilling: Energy Dictionary
20. drilling: Legal dictionary

Computing (1 matching dictionary)

21. Drilling (oil), drilling: Encyclopedia

Medicine (3 matching dictionaries)

22. drilling: Merriam-Webster Medical Dictionary
23. online medical dictionary (No longer online)
24. drilling: Medical dictionary

Miscellaneous (1 matching dictionary)

25. drilling: Idioms

Slang (1 matching dictionary)

26. Drilling: Urban Dictionary

Tech (2 matching dictionaries)

27. Glossary of Coal Mining Terms (No longer online)
28. National Glass Association Glossary (No longer online)

(Note: See drill as well.)

Definitions from Wiktionary (Drilling) ▸ noun:  The act or process of drilling. ▸ noun:  A long firearm with three barrels (typically a mix of shotgun and rifle barrels). ▸ noun:  A heavy, twilled fabric of linen or cotton; drill. ▸ noun:  A surname from German. Similar: boring, oil production, drill and kill, percussion, thirling, puncturing, rock drill, pounding, drumbeating, gunning, more... Opposite: filling, sealing, closing, stopping, solidifying Phrases: oil drilling, Offshore drilling, drilling rig, well drilling, drilling fluid, more... Adjectives: deep, exploratory, well, rotary, directional, further, hole, direct, intangible, horizontal, actual Colors:     gray,     silver,     black,     steel blue,     charcoal, more... ▸ Words similar to drilling ▸ Usage examples for drilling ▸ Idioms related to drilling ▸ Wikipedia articles (New!) ▸ Popular adjectives describing drilling ▸ Words that often appear near drilling ▸ Rhymes of drilling ▸ Invented words related to drilling