stirk definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Brit. a bullock or heifer, esp. one between one and two years old
Origin: Middle English ; from Old English stierc, akin to Gothic stairo, barren: see sterile
stirk definition by American Heritage Dictionary
noun Chiefly British
A heifer or bullock, especially between one and two years old.
Origin: Middle English, from Old English stīrc; see stā- in Indo-European roots.