speculum
noun [ C ] uk/ˈspek.jə.ləm/ us/ˈspek.jə.ləm/ specula or speculums
(MEDICAL INSTRUMENT)
medical specialized（医用）窥器，扩张器
a metal instrument that is put into a long narrow part of the body in order to open it up so it can be examined
An ear speculum may be used to look into the ear canal. 耳窥镜可用于观察耳道。
Speculums are used in smear tests. 妇科窥器用于涂片检查。
- More examples
- He picked up his speculum from a small metal tray and started his examination.
- The inside of your nose may need to be examined with a nasal speculum.
- The speculum keeps the walls of the vagina apart so that the cervix can be seen.
(BRIGHT FEATHERS)
biology specialized（鸟类的）翼斑，翼镜
an area of brightly coloured feathers on ducks and some other birds
The brown duck has a distinctive large blue speculum. 这只棕色的鸭子长着一片很大的、与众不同的蓝色翼斑。
- More examples
- The Mallard has a bright blue-purple speculum.
- The size and colour of the speculum varies between species.
- It is smaller than a Mallard, with a shorter bill, more pointed tail, and a green speculum.
- In flight, both sexes flash deep-green specula.