A piece of a branch or root of a tree that is softned by chewing and then used as a toothbrush. Miswaks were used at the time of the Prophet (saws) and their use, as well as dental hygeine more generally, is from the Sunnah.

The miswak (miswaak, siwak) is a natural toothbrush made from the twigs of the Salvadora persica tree. Other tree types that are used are the arak tree, peelo tree, olive, walnut, and other trees with bitter roots. Pomegranate twigs are never used for miswak.