Definition of nun buoy in English:

nun buoy

Syllabification: nun bu·oy

noun

US
A buoy that is circular in the middle and tapering to each end.
More example sentences
  • Nun buoys appear wherever commercial navigation occurs on the Mississippi, Illinois, Missouri, and Ohio Rivers.

Origin

early 18th century: from obsolete nun 'child's top' and buoy.

Definition of nun buoy in:

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Word of the day abjure
Pronunciation: əbˈdʒʊə
verb
solemnly renounce (a belief, cause, or claim)