An expert or professional; someone skilled or experienced in a particular field.
あの店は料理の玄人が集まることで有名だ。
That restaurant is famous for attracting culinary experts.
彼は機械修理の玄人で、どんな故障でも直してしまう。
He's a pro at fixing machines; he can repair any breakdown.
プロではないが、玄人顔負けの腕前だ。
Not a professional, but his skill would put professionals to shame.
A dated/slang term referring to women working in the nightlife industry (e.g., geisha or prostitutes). This use is historical or colloquial and can sound discriminatory today.
昔の小説には『玄人』という語で夜の仕事の女性を指す例がある。
In old novels there are examples where the term '玄人' refers to women in nightlife work.
この用法は時代によって意味合いが変わるので、現代では注意して使うべきだ。
Because the connotations of this usage have changed over time, one should be careful using it today.