(countable, vulgar, literally) The penis of a horse or a similar equid.
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(countable, vulgar, figuratively, slang) A very large penis.
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(uncountable, slang, vulgar, chiefly, _, military) Sausage such as baloney or salami.
1925, Ernest Hemingway, letter to Harold Loeb dated 5 January 1925, quoted in Kenneth Schuyler Lynn, Hemingway, Harvard University Press (1995; first published 1987), , [http://books.google.com/books?id=W-cAkit-JMcC&pg=PA266 page 266]:
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Add your own interpretation of "horse cock".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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