Meaning

noun a charge of ammunition for a single shot

noun an interval during which a recurring sequence of events occurs

noun a regular route for a sentry or policeman

originFrom Middle English rounen, from Old English rūnian (“to whisper, talk low, talk secrets, consipre, talk secretly”), from Proto-Germanic *rūnōną (“to talk secrets, whisper, decide”), *raunijaną (“to investigate, examine, prove”), from Proto-Indo-European *(e)rewə-, *(e)rwō- (“to trace, find out, look out”). Cognate with Scots roun (“to converse with in whispers, speak privately”), Middle Low…

Etymology from Wiktionary, CC BY-SA 3.0