drilling rig

drill rig

noun
rig1 ( def 9 ).
Also called drilling rig.


Origin:
1910–15, Americanism

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
drilling rig
 
n
1.  the full name for rig
2.  a mobile drilling platform used for exploratory offshore drilling

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