stirk
A yearling cow; a young bullock or heifer.
dated
But beware of MacPhadraick, my son; for when he called himself the friend of your father, he better loved the most worthless stirk in his herd, than he did the life-blood of MacTavish Mhor.
Where it comes from
From Middle English stirk, sterke, styrke, from Old English stīrc, stȳrc, stȳric, stīorc (“calf, a stirk, a young bullock or a heifer”), from Proto-West Germanic *stiurik, from Proto-Germanic *stiurikaz (“bullock”), diminutive of Proto-Germanic *steuraz (“steer”), equivalent to steer + -ock. Cognate with Middle Low German sterke (“stirk”), Middle Dutch stierick ("stirk"; compare Modern Dutch sterke (“young cow”)), German Sterk, Stärke, Stark (“stirk”). More at steer.
Adapted from the Wiktionary entry stirk (CC BY-SA 4.0).