The Collaborative International Dictionary
Hay \Hay\, n. [OE. hei, AS. h[=e]g; akin to D. hooi, OHG. hewi, houwi, G. heu, Dan. & Sw. h["o], Icel. hey, ha, Goth. hawi grass, fr. the root of E. hew. See Hew to cut.] Grass cut and cured for fodder.
Make hay while the sun shines.
--Camden.
Hay may be dried too much as well as too little.
--C.
L. Flint.
Hay cap, a canvas covering for a haycock.
Hay fever (Med.), nasal catarrh accompanied with fever, and sometimes with paroxysms of dyspn[oe]a, to which some persons are subject in the spring and summer seasons. It has been attributed to the effluvium from hay, and to the pollen of certain plants. It is also called hay asthma, hay cold, rose cold, and rose fever.
Hay knife, a sharp instrument used in cutting hay out of a stack or mow.
Hay press, a press for baling loose hay.
Hay tea, the juice of hay extracted by boiling, used as food for cattle, etc.
Hay tedder, a machine for spreading and turning new-mown hay. See Tedder.
Wikipedia
A hay knife is an agricultural hand tool: a long-bladed knife with large rounded serrations on the edge, used for sawing off sections at the end of a bale, stack or compact pile of hay.
Category:Cutting tools Category:Mechanical hand tools Category:Farming tools
Usage examples of "hay knife".
A saw-bladed hay knife projected from the stack from which the cart was being filled.