reflector

About 1.40 uses per million words.

Meaning

noun Something which reflects heat, light or sound, especially something having a reflecting surface.
noun A reflecting telescope.
noun A small, often red, reflecting disk on the rear of a vehicle or bicycle that reflects the headlights of other vehicles.
noun A safety reflector.
noun One who reflects on something; one who thinks or considers at length.
noun Something that is reflective (indicative) of something else.
noun A pattern which can change the direction and/or offset of an oncoming spaceship without being destroyed.