phossy jaw

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either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.
A condition caused by chronic occupation-related poisoning by elemental or yellow phosphorus which causes mandibular necrosis, in particular in factories producing yellow/white phosporus-based matches

phos·sy jaw

(fosē jaw)
Phosphorus necrosis of the jaw, caused by overexposure of white phosphorus, which was used in the manufacture of matches until the early 20th century; agent is still used for signaling, filtering, and incendiary purposes.
References in periodicals archive ?
Esch of Wisconsin and Miles Dawson, a prominent New York attorney and actuary, to prepare a federal bill that would eradicate phossy jaw.
Over the previous year, Andrews had worked hard putting together a compelling case against phossy jaw and against John Huner.
Phossy jaw was a terrible disease, and uniform state legislation probably could not be secured to eradicate it.