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Definition of chink. 1 : a small cleft, slit, or fissure a chink in the fence. 2 : a weak spot that may leave one vulnerable his lawyers found a chink in the law. 3 : a narrow beam of light shining through a chink.
Webster Dictionary(1.00 / 1 vote)Rate this definition: 1  Chin(noun) the lower extremity of the face below the mouth; the point of the under jaw. 2  Chin(noun) the exterior or under surface embraced between the branches of the lower jaw bone, in birds.