Stirk

from WordNet (r) 3.0 (2006)

stirk
    n 1: yearling heifer or bullock

from The Collaborative International Dictionary of English v.0.48

Stirk \Stirk\, n. [AS. stric, from ste['o]r a steer. See {Steer}
   a young ox.]
   A young bullock or heifer. [Prov. Eng. & Scot.] --Sir W.
   Scott.
   [1913 Webster]