*ox
Here are some words that match your criteria:

- alms box
- Aloe ferox
- American rattlebox
- Anaprox
- arctic fox
- Asian wild ox
- autumnal equinox
- ballot box
- bandbox
- Barbarea praecox
- batter's box
- black box
- black fox
- blue fox
- boom box
- Botox
- box
- breadbox
- call box
- camelpox
- cashbox
- cat box
- cereal box
- Charles James Fox
- chatterbox
- chickenpox
- chickweed phlox
- Chimonanthus praecox
- Christmas box
- cigar box
- Clorox
- Cnemidophorus velox
- coin box
- common box
- cowpox
- cox
- crab-eating fox
- cracker box
- Crotalus atrox
- Cryptoprocta ferox
- deedbox
- dementia praecox
- deposit box
- Desert Fox
- detox
- dialog box
- dice box
- dispatch box
- dwarf phlox
- Eastern Orthodox
- equinox
- Esox
- European box
- fall equinox
- firebox
- flummox
- flying fox
- fox
- Gallant Fox
- gearbox
- genus Esox
- genus Gobiesox
- genus Phlox
- genus Scomberesox
- genus Scombresox
- genus Volvox
- George Fox
- Gobiesox
- goggle box
- gray fox
- Greek Orthodox
- grey fox
- hatbox
- heterodox
- homeobox
- horsebox
- hotbox
- icebox
- idiot box
- Indian rattlebox
- jack-in-the-box
- Jewish-Orthodox
- John Knox
- journal box
- jukebox
- jury box
- Kaffir pox
- kit fox
- Kniphofia praecox
- Knox
- letter box
- lockbox
- lox
- lummox
- Maalox
- mailbox
- March equinox
- marmalade box
- matchbox
- milk pox