tin·ni·tus 
(tĭ-nītəs, tĭnĭ-)
(tĭ-nītəs, tĭnĭ-)n. pl. tin·ni·tus·es
Noise such as buzzing, ringing, or whistling, heard in the ear without an external stimulus and having multiple causes including infection, trauma, and drugs.
[Latin tinnītus, from past participle of tinnīre, to ring, of imitative origin.]