Fitted with or wearing a crupper; equipped with a saddle crupper (especially of a horse).
From crupper + -ed (past participle/adjectival suffix). Forms an adjective describing equipment status, following standard English patterns of verb-to-adjective conversion.
Cruppered horses were the medieval and Renaissance equivalent of buckled-up seatbelts—it was a safety feature that prevented accidents on mountain paths and during battle!
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