They have long tails, and prominent bare skin at the base of the lower mandible.
From the en.wikipedia.org
These birds have unusual bills in which the lower mandible is bent to one side.
From the guardian.co.uk
The mandible of a wild boar was found placed in the arms of one of the skeletons.
From the en.wikipedia.org
They look like large dark gulls, but have a fleshy cere above the upper mandible.
From the en.wikipedia.org
The bullet was lodged deep in the mandible and tissue had started to grow over it.
From the ocregister.com
The explosion cracked his mandible, broke his nose and blew out most of his teeth.
From the ocregister.com
The upper mandible is supported by a three-pronged bone called the intermaxillary.
From the en.wikipedia.org
The mandible further from the prey could move almost twice as fast as the near one.
From the newscientist.com
A mandible from a 40,000-year-old early modern human skeleton found in China.
From the sciencedaily.com
More examples
Lower jaw: the jaw in vertebrates that is hinged to open the mouth
(mandibular) relating to the lower jaw
The mandible (from Latin mandibula, "jawbone") or inferior maxillary bone forms the lower jaw and holds the lower teeth in place. ...
In arthropods, the mandible is either of a pair of arthropod mouthparts used for biting, cutting and holding food. Mandibles are often simply referred to as jaws. The arthropods with mandibles form the clade Mandibulata, comprising the extant subphyla Myriapoda, Crustacea and Hexapoda. ...
Insect mandibles are a pair of appendages near the insectu2019s mouth, and the most anterior of the three pairs of oral appendages (the labrum is more anterior, but is a single fused structure). Their function is typically to grasp, crush, or cut the insectu2019s food, or to defend against predators or rivals...
The lower jaw, especially the lower jawbone; One of a pair of mouthparts of an arthropod designed for holding food
(Mandibles) The jaws of an insect; used by bees to form the honey comb and scrape pollen, in fighting and picking up hive debris.
(Mandibles) the upper and lower parts of the beak.
(mandibles) jaws; mouthparts in insects used for capturing prey and biting