cage-freeˈcage-free adjective 
cage-free egg production is production that does not involve keeping chickens in small cages: 
We only offer cage-free eggs for sale.
cage-free egg production is production that does not involve keeping chickens in small cages: We only offer cage-free eggs for sale.- open primary
- open prison
- open sandwich
- open season
- open sesame
- open source
- open system
- open-toed
- Open University
- open verdict
- open vowel
- openwork
- opera
- operable
- opera house
- operate
- operatic
- operatically
- operating room
- operating system
- operating table
- operating theatre
- operation
- operational
- operationally