Answer: speculum

AnswerCrossword Clue
speculuminstrument for rendering a part accessible to observation, as by enlarging an orifice
speculummirror or reflector, esp. one of polished metal, as on a reflecting telescope
speculuma medical instrument
speculumany 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