A person or animal that crouches, or in medieval times, a knight or warrior known for fighting in a crouched position.
From 'crouch' (Old French 'crochier') plus the agent suffix '-er', meaning one who crouches or performs crouching actions.
Medieval fighting manuals actually describe different combat stances, and 'crouchers' were soldiers trained to fight from a low position for defensive advantage—it was literally a recognized combat technique taught in knight schools.
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