A staff, pole, or support beam that forms part of the structure of a bed frame.
From bed + staff (from Old English 'stæf' meaning a stick or rod). This is an archaic term from woodworking traditions when beds were made of wooden poles and beams joined together.
Before metal bed frames, carpenters used bedstaffs as structural support—understanding these terms reveals how beds evolved from hand-crafted furniture to mass-produced commodities.
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