ox

Before it became a word for a farm animal, this ancient term may have pictured a creature that “sprinkled”—perhaps a reference to mating or to the animal’s powerful, wet exertions—through a proposed connection with the PIE root *uks-, “to sprinkle.” From there it traveled into Proto-Germanic as *ukhson and into Old English as oxa, while its relatives spread across the linguistic landscape: Welsh ych, Sanskrit ukṣán, and Avestan uxšan all preserve echoes of the same bovine ancestor. By the Middle English period, oxe was already recognizable, and by the 1540s English had also begun using the black ox as a grim emblem of misfortune, adversity, or old age. The plural oxen is a fossil from an older English habit of forming certain plurals with -en, like children. So when you say oxen, you are not adding a modern plural ending—you are carrying a small, living piece of Anglo-Saxon grammar behind a team of animals.