耳道 ěrdào ear canal Origin Definitions Defs Strokes Stroke Words Sentences Sents 外耳道 wài'ěrdào external auditory canal The passage leading from the outer ear to the eardrum; the external auditory meatus.内耳道 nèi'ěrdào internal auditory meatus the canal in the temporal bone of the skull that contains the auditory and facial nerves