Equipment, apparatus, or systems used for a specific purpose, especially on ships or in oil drilling; also manipulates something dishonestly.
From Scandinavian origins, possibly related to 'rig' meaning to dress or outfit. Originally referred to ship equipment, expanded to drilling equipment, and the verb form 'to rig' means to manipulate unfairly.
Oil drilling 'rigs' are some of the largest moving structures humans build—some are taller than skyscrapers and can move across the ocean, yet most people have never heard of them despite their massive economic importance.
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