A small fortified outpost or watchtower, particularly one used for coastal defense in medieval times.
Possibly from Old English or Old Norse elements meaning 'hall' + 'secret' or 'enclosure,' though etymology is uncertain. The term is rare and primarily appears in historical military architecture texts.
Medieval coastal communities built these tiny fortifications like ancient burglar alarms—one guard could spot raiders coming from miles away across the water and alert the village!
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