WordNet (r) 3.0 (2006):

ear lobe
    n 1: the fleshy pendulous part of the external human ear [syn:
         earlobe, ear lobe]

Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "ear lobe":
   Eustachian tube, anvil, auditory apparatus, auditory canal,
   auditory meatus, auditory nerve, auditory ossicles, auditory tube,
   auricle, basilar membrane, bony labyrinth, cauliflower ear,
   cochlea, conch, concha, drape, drumhead, ear, eardrum, endolymph,
   external ear, hammer, hanger, hanging, incus, inner ear, lappet,
   lobation, lobe, lobule, lug, malleus, mastoid process, middle ear,
   organ of Corti, outer ear, oval window, pendant, perilymph, pinna,
   round window, secondary eardrum, semicircular canals, shell,
   stapes, stirrup, tympanic cavity, tympanic membrane, tympanum,
   uvula, vestibule