ox

Short definition from Wiktionary

Noun

1. 1
   An adult castrated male of cattle (B. taurus), especially when used as a beast of burden.
2. 2
   Any bovine animal (genus Bos). A neat, a beef.
3. 3
   Abbreviation of oxygen.

Proper noun

1. 1
   A Chinese constellation located near Capricorn, one of the 28 lunar mansions and part of the larger Black Turtle.
2. 2
   The second of the 12-year cycle of animals which appear in the Chinese zodiac related to the Chinese calendar.
3. 3
   A surname.
4. 4
   Clipping of Oxford.