The Collaborative International Dictionary
Winterkilling
Winterkill \Win"ter*kill`\, v. t. [imp. & p. p. Winterkilled; p. pr. & vb. n. Winterkilling.] To kill by the cold, or exposure to the inclemency of winter; as, the wheat was winterkilled. [U. S.]
Wiktionary
winterkilling
vb. (present participle of winterkill English)