We found one dictionary that defines the word drill rigs:

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1. drill rigs: Wiktionary

▸ Words similar to drill rigs ▸ Usage examples for drill rigs ▸ Idioms related to drill rigs ▸ Wikipedia articles (New!) ▸ Words that often appear near drill rigs ▸ Rhymes of drill rigs ▸ Invented words related to drill rigs