n.1 a piece of glass or metal etc. for reflecting light in a required direction, e.g. a red one on the back of a motor vehicle or bicycle.
2 a a telescope etc. using a mirror to produce images. b the mirror itself.
n.1 a piece of glass or metal etc. for reflecting light in a required direction, e.g. a red one on the back of a motor vehicle or bicycle.
2 a a telescope etc. using a mirror to produce images. b the mirror itself.
Oxford English vocab. Оксфордский английский словарь. 2012