polytunnelpol‧y‧tun‧nel /ˈpɒliˌtʌnl $ ˈpɑː-/ noun [countable] 
a long structure consisting of a frame covered in plastic, used for growing plants in
a long structure consisting of a frame covered in plastic, used for growing plants in- freebooter
- freeborn
- Free Church
- Free Church of Scotland
- free collective bargaining
- freedom
- freedom fighter
- Freedom of Information Act
- Freedom Tower
- free enterprise
- free fall
- free-falling
- free-floating
- Freefone
- underwent
- underwhelm
- underworld
- underwrite
- underwriter
- Underwriters' Laboratories
- undeserved
- undesirable
- undetected
- undeterred
- undeveloped