TWMI - What does TWMI stand for? The Free Dictionary
References in periodicals archive
MAE Snafedd a Twmi
yn deryn her gan Rhagwrach heddiwb yn Cnafon Coed (S4C, 4pm).
Youngsters will love meeting characters such as Snafedd (Slime), Twmi and Wili-Wi, small trolls with large personalities.
Twmi on the other hand isn't the brightest of little trolls, but he is a very faithful friend to Snafedd.