nun-buoy

nun buoy

[nuhn]
noun
a conical, unlighted buoy used as a channel marker, especially on the starboard side of a channel entering from seaward.
Compare can buoy.


Origin:
1695–1705; obsolete nun spinning top + buoy

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World English Dictionary
nun buoy (nʌn)
 
n
nautical Compare can buoy 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
 
[C18: from obsolete nun a child's spinning top + buoy]

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