A support or cushion designed to support the head, typically found in vehicles, chairs, or furniture.
From 'head' (the upper part of the body) and 'rest' (a support, from Old English 'rest'). This compound became common in the 20th century with automotive and furniture design innovations.
Car headrests were actually invented as safety devices—they prevent whiplash injuries by supporting your head during rear-end collisions, turning comfort into lifesaving technology.
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