Oxen are cattle kept for pulling and heavy work. Slow, enormously strong, and patient.
The word is the plural of ox, and it is one of the last irregular plurals in English formed with -en, alongside children and brethren, which is why it looks so odd. An ox is usually a castrated bull, trained in pairs to a yoke. They pulled ploughs and carts across most of the world for thousands of years and still do in many places.
1nounoxenCattle trained to pull ploughs and carts.
“Two oxen were still working the top field.”
Middle English
oxen
English, today
oxen
Built from
From Middle English oxen. From Middle English oxe, from Old English oxa, from Proto-West Germanic ohsō, from Proto-Germanic uhsô, nominative and accusative plural of uhsô (“ox”), equivalent to ox + -en.
Etymology from Wiktionary, CC BY-SA