The bark of certain trees that people or animals chew on, or a stick used for chewing and cleaning teeth.
From chew + bark (the outer layer of a tree), a compound word combining the action with the material, possibly influenced by chewing-stick traditions.
Chewbark references a practice that goes back millennia—people in Africa and Asia have chewed soft twigs and bark to clean teeth, predating toothbrushes by thousands of years.
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