to square one's elbows―(腰に手を当ててなら)―have one's arms akimbo
of or relating to the elbow
to sit knee to knee with one―sit opposite each other
to cross one's legs (tailor-fashion)
to sit knee to knee with one―sit opposite each other
(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
膝を組むこと
to take interest in―espouse the cause of―support―anything
the forearm
ひじを曲げること.
手首をはじいて
ひざを折る
肩をもむ
ひざまで