Definitions
Century Dictionary and Cyclopedia
- n. A large cylindrical or conical floating buoy, used as a mark for shoals, etc. See buoy.
Examples
“It was only a can-buoy, lifting lonely to the swell.”
“When he come to his office quarters he was 'bout up to my arms, red as a can-buoy, and white hair stickin 'up straight as a shoe-brush on his head.”
Lists
These user-created lists contain the word ‘can-buoy’.
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The Aubrey/Maturin List I'm Gonna Mak...
I'm wading through Patrick O'Brian's Aubrey/Maturin novels one by one, and someday, I'll wade through them again and list all the words I learned while reading them.
Edit: I started ma...studdingsail, carronade, mumchance, grumlin-futtocks, crosscat-harpings, holystone, sennit, orlop, orchitis, negus, kevel, altumal and 1112 more...
Tweets
Looking for tweets for can-buoy.

chained_bear "All was well here and moving very fast, and as he ran on deck, calling aloud for the jolly-boat and a can-buoy, some part of his mind had time to thank God for good officers..."
--Patrick O'Brian, The Far Side of the World, 187
A Sea of Words lists the meaning as:
"A navigational marker with a flat top, as opposed to a nun-buoy, which has a conical top, the underwater part being conical in both types." (126) Feb 21, 2008