mowburnt en · ADJ
Etymology
From mow + burnt.
Meanings
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(not-comparable, obsolete) Of hay: stacked before it is sufficiently dry, leading to excessive fermentation and sometimes toxicity.
This is necessary for the developement of the saccharine principle; but occasionally it proceeds too far and the hay becomes mowburnt, in which state it is injurious, or even poisonous.
1865, William Youatt, Youatt on the Structure and the Diseases of the Horse, page 399: