A soft, usually brimless hat, or the top or lid that covers something like a bottle or pen.
It comes from Old English 'cæppe', influenced by Latin 'cappa', meaning a hood or cloak. Over time, the idea narrowed from any head covering or hood to the smaller hat and then to any kind of top or lid.
The same word that gives us a baseball 'cap' also hides inside ideas like 'salary cap' and 'cap off your day'. We’ve stretched a simple hat into a metaphorical lid on money, effort, and even stories.
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