1. (n.) Any projection or division, especially one of a somewhat rounded form

2. (n.) A rounded projection or division of a leaf.

3. (n.) A membranous flap on the sides of the toes of certain birds, as the coot.

4. (n.) A round projecting part of an organ, as of the liver, lungs, brain, etc.

5. (n.) The projecting part of a cam wheel or of a non-circular gear wheel.

Eustachian tube anvil appendage arachnoid arbor vitae archipallium arm auditory apparatus auditory canal auditory meatus auditory nerve auditory ossicles auditory tube auricle basilar membrane between brain bony labyrinth bough brain stem branch cauliflower ear cerebellar hemispheres cerebellum cerebral cortex cerebrospinal fluid cerebrum cochlea conch concha convolution corpus callosum corpus striatum diencephalon drape drumhead dura mater ear ear lobe eardrum endbrain endolymph external ear fissure folia forebrain fornix frontal lobe glial cells globus pallidus gray matter gyrus hammer hand hanger hanging hindbrain hippocampus hypothalamus imp incus inner ear joint lappet leg lenticular nucleus limb limbic lobe link little brain lobation lobule lug malleus mantle mastoid process medulla oblongata member meninges mesencephalon metencephalon midbrain middle ear myelencephalon neopallium occipital lobe offshoot optic chiasm organ organ of Corti outer ear oval window pallium parietal lobe pendant perilymph pia mater pineal body pinion pinna pituitary body pons ramification reticular system rhombencephalon round window runner scion secondary eardrum semicircular canals shell spray sprig spur stapes stirrup subthalamus switch tail telencephalon temporal lobe tendril thalamus twig tympanic cavity tympanic membrane tympanum uvula ventricle vermis vestibule white matter wing