nun buoy

nun buoy

(nʌn) n (Nautical Terms) nautical 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. Compare can buoy[C18: from obsolete nun a child's spinning top + buoy]

nun′ bu`oy

(nʌn)
n. an unlighted buoy having a conical form above water. [1695–1705; obsolete nun spinning top]

Thesaurus

Noun	1.nun buoy - a buoy resembling a cone conical buoy, nunbuoy - bright-colored; a float attached by rope to the seabed to mark channels in a harbor or underwater hazards