Hay knife - definition of Hay knife by The Free Dictionary
Also found in: Wikipedia
A toothed knife about three feet long used to cut hay from a haystack. After hay had settled in a stack, it was very hard to pull out chunks with a pitchfork. It was usually much easier and convenient to first cut off a section of hay with a hay knife.
1001 Words and Phrases You Never Knew You Didn’t Know by W.R. Runyan Copyright © 2011 by W.R. Runyan
References in periodicals archive
FOLKS WHO MAKE HAY on a small scale often simply stack the dried forage--usually out of the elements--but piles of loose hay take up a lot of space and are sometimes difficult to feed from without the help of a hay knife
and some serious labor.
One example was Jim Gray's new old stock (NOS) hay knife
with the Ney name intact.