Definitions for "Protiles"
Commercially manufactured plastic Scrabble tiles preferred for organized Scrabble play. Wooden tiles or other tiles with recessed letters that allow for Brailing are not allowed in tournament play.
Scrabble tiles with a smooth face so the blanks can't be identified by touch. Often required in tournament play.
A brand name, now used generically, for the plastic tiles used in competitive Scrabble.