SPECULUM
- mirror or reflector, esp. one of polished metal, as on a reflecting telescope
- any of several bronze alloys with a high tin content, often containing other materials, as silver, brass, lead, zinc, or arsenic, used for making mirrors and reflectors
- instrument for rendering a part accessible to observation, as by enlarging an orifice
- a medical instrument [n SPECULA, SPECULUMS] : SPECULAR [adj]