Definify.com

Webster 1913 Edition

(hā′fôrkˊ)

Noun.

A fork for pitching and tedding hay.

Horse hayfork

a contrivance for unloading hay from the cart and depositing it in the loft, or on a mow, by horse power.

hayfork ‎(plural hayforks)

A tool used for moving hay; a pitchfork.
- 2007 March 18, Michael Chabon, “‘Gentlemen of the Road’”, in New York Times:
  Creaking leather and the snorting of mules, snatches of off-key ballads, the clop of hooves and the patter of bare soles, the rattle of hayforks and lances.