also: びきょう
noun, noun which may take the genitive case particle 'no'
nasal speculum
A medical instrument used to widen the nostrils for examination. Primarily a technical term.
The doctor used a nasal speculum to examine the inside of the nasal cavity.
Standard medical term; the reading びきょう is more common in clinical contexts.
Alternate reading; less common but still used, especially in non-specialist contexts.
Compound of 鼻 (nose) and 鏡 (mirror), referring to a speculum with a reflective surface. The reading びきょう is the Sino-Japanese on'yomi, while はなかがみ is a mixed kun-on reading.