Artificial intelligent assistant

can-buoy

ˈcan-buoy Naut.
  [f. can n.1 + buoy n.]
  A large cone-shaped buoy, floated over sands, shallows, etc., and usually painted of a definite colour for purposes of recognition. (Formerly called can-bodies, Smyth, Sailor's Word-bk.)

1626 Capt. Smith Accid. Yng. Seamen 13 A boy, a can boy. 1769 Falconer Dict. Marine (1789) Can-Buoys..are in the form of a cone, and of this construction are all the buoys which are floated over dangerous banks and shallows. 1858 Merc. Mar. Mag. V. 317 The Black Can Buoy on the Black Tail Spit. 1875 Bedford Sailor's Pocket-bk. v. (ed. 2) 136 Single-coloured can buoys..will mark the starboard side.

Oxford English Dictionary

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