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| a gadget; dingus; thingumbob. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
speculum spec·u·lum (spěk'yə-ləm)
n. pl. spec·u·lums or spec·u·la (-lə)
A mirror or polished metal plate that is used as a reflector in optical instruments.
An instrument that is used to dilate the opening of a body cavity for medical examination.