ひざを折る
ひざを立てる.
ひざを曲げる
ひざをすりむく.
ひざまで
ひざに及ぶさま
to cross one's legs (tailor-fashion)
(膝を屈めるだけの意味なら)to bend one's knees―(礼拝、服従するの意味なら)―bow the knee (to or before god or man)―(屈服するの意味なら)―come to one's knees
to sit knee to knee with one―sit opposite each other
膝を組むこと
to sit knee to knee with one―sit opposite each other
to square one's elbows―(腰に手を当ててなら)―have one's arms akimbo
ひざで立つ.