speculums in English
noun
1
a metal or plastic instrument that is used to dilate an orifice or canal in the body to allow inspection.
An instrument called a speculum , the same as used for a smear test, is sometimes used.
2
a bright patch of plumage on the wings of certain birds, especially a strip of metallic sheen on the secondary flight feathers of many ducks.
The latter is important because dabbling ducks have a coloured area in the wing called the speculum .
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