Rummikub is a tile-based game for two to four players, combines elements of the card game rummy and mahjong.
A retainer is a simple device that helps to correct your bite, as well as sometimes address other conditions. You may have seen people wearing a retainer before, but they are not all that noticeable. A retainer is a small device that is made out of clear plastic, rubber, or even metal. They are custom-made so that they only fit your teeth. They are part of a treatment plan that has likely been determined by an orthodontist.
& Engin.) a wall built to keep any movable backing, or a bank of sand or earth, in its place; - called also retain wall. v. i. 1. To belong; to pertain. A somewhat languid relish, retaining to bitterness.