monocle
/ˈmɑnəkəl/
noun
- A single eyeglass lens worn in front of one eye, held in place by the muscles around the eye.
- He adjusted his monocle and peered at the small print.
- In old movies, wealthy characters often wear a monocle to look distinguished.
- The old gentleman wore a gold-rimmed monocle on his right eye.
Synonyms