We found 14 dictionaries that define the word drilling rig:

General (10 matching dictionaries)

1. drilling rig: Oxford Learner's Dictionaries
2. drilling rig: Collins English Dictionary
3. drilling rig: Vocabulary.com
4. drilling rig: Wiktionary
5. drilling rig: Dictionary.com
6. Drilling rig (petroleum), Drilling rig: Wikipedia, the Free Encyclopedia
7. drilling rig: Rhymezone
8. drilling rig: FreeDictionary.org
9. drilling rig: Mnemonic Dictionary
10. drilling rig: TheFreeDictionary.com

Business (1 matching dictionary)

11. eyefortransport e-commerce transportation glossary (No longer online)

Computing (1 matching dictionary)

12. drilling rig: Encyclopedia

Tech (2 matching dictionaries)

13. Schlumberger Oilfield Glossary (No longer online)
14. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See drilling_rigs as well.)

Definitions from Wiktionary (drilling rig) ▸ noun:  Used other than figuratively or idiomatically: see drilling, rig. ▸ noun:  An oil rig. Similar: drill rig, oilrig, oil rig, piling rig, drill, drillground, drillcore, gadding car, derrick, cave, more... Opposite: oil platform, offshore platform, production platform ▸ Words similar to drilling rig ▸ Usage examples for drilling rig ▸ Idioms related to drilling rig ▸ Wikipedia articles (New!) ▸ Words that often appear near drilling rig ▸ Rhymes of drilling rig ▸ Invented words related to drilling rig