Uncus

noun

1. A hook-shaped part or process.
2. The hook-like anterior extremity of the uncinate convolution of the brain.
3. In entomology, the beak-like mesial prolongation of the eighth abdominal segment of lepidopteróus insects. It forms no proper part of the organs ancillary to generation.
4. The head, hook, or comb of the malleolus or lateral tooth of the mastax of a wheel-animalcule.
5. In botany, a hook.