股またを開ひらく

expression, godan verb (-ku)

spread one's legs; open one's legs

Literal physical action of parting the legs, used in neutral descriptions of posture, exercise, or medical contexts.

• ストレッチで股またを開ひらく運うん動どうをした。

  I did an exercise spreading my legs during stretching.

expression, godan verb (-ku)

agree to have sex (of a woman); put out

Colloquial and idiomatic; used for a woman consenting to sexual intercourse. Often carries a vulgar or crude tone.

• 彼かの女じょは簡かん単たんに股またを開ひらくような人ひとじゃない。

  She's not the kind of person who would easily agree to have sex.