mandible(redirected from Upper mandible)
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Related to Upper mandible: maxillary arch
1. the lower jawbone in vertebrates
2. either of a pair of mouthparts in insects and other arthropods that are usually used for biting and crushing food
3. Ornithol either the upper or the lower part of the bill, esp the lower part
The bone of the lower jaw.
The lower jaw.
Any of various mouthparts in many invertebrates designed to hold or bite into food.