片かた膝ひざを立たてる

expression, ichidan verb

sit with one knee raised; raise one knee while sitting on the floor

Describes a sitting posture on the floor where one knee is bent and raised, often with the foot flat on the floor, while the other leg remains folded or extended. Common in casual or informal settings.

• 彼かれは床ゆかに座すわって片かた膝ひざを立たてて話はなしを聞きいていた。

  He sat on the floor with one knee raised, listening to the conversation.

• 片かた膝ひざを立たてて座すわると、立たち上あがりやすい。

  If you sit with one knee up, it's easier to stand up.