Llanfyllin Posted in L Best definition Llanfyllin A quaint drinking town situated in mid-wales with a slight farming problem. Dafydd: Hey, lets go Llanfyllin! Iwan: Sounds like a plan monner, I’m parched. How satisfied are you with the definition? Looking for Llanfyllin meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 108 times.