(1)より大きくまたは等身大に広げる、あるいは伸ばす
(2)extend or stretch out to a greater or the full length; "Unfold the newspaper"; "stretch out that piece of cloth"; "extend the TV antenna"
さらに詳しく
(1)快適な座った姿勢で落ち着く
(2)settle into a comfortable sitting position