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单词 nun buoy
释义

WordReference Random House Unabridged Dictionary of American English © 2024
nun′ bu′oy  (nun),USA pronunciation 
  1. Naval Termsa conical, unlighted buoy used as a channel marker, esp. on the starboard side of a channel entering from seaward. Cf. can buoy. See illus. under buoy. 
  • obsolete nun spinning top + buoy 1695–1705

Collins Concise English Dictionary © HarperCollins Publishers::
nun buoy /nʌn/ n
  1. a buoy, conical at the top, marking the right side of a channel leading into a harbour: green in British waters but red in US waters
Etymology: 18th Century: from obsolete nun a child's spinning top + buoy
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更新时间：2025/7/3 6:45:06