[mon-uh-kuh
l] 
| an eyeglass for one eye. |
| mon·o·cle (mŏn'ə-kəl) n. An eyeglass for one eye. [French, from Late Latin monoculus, having one eye : Greek mono-, mono- + Latin oculus, eye; see okw- in Indo-European roots.] mon'o·cled (-kəld) adj. |
"That this, a hybrid, a Gallicism, and a word with no obvious meaning to the Englishman who hears it for the first time, should have ousted the entirely satisfactory eyeglass is a melancholy illustration of the popular taste in language." [Fowler]