CEDICT
the posture of having one's legs crossed (one leg crossed over another) when seated
Wiktionary
一條腿擱在另一條腿上的坐姿。
重編國語辭典
坐著時把一條腿放在另一條腿上交叉的姿勢
維基詞典
He sat there with his legs crossed.
Source: Tatoeba
classifier: 條