noun which may take the genitive case particle 'no'
folded in half; doubled
Describes something folded exactly in two, often used with paper, cloth, or documents. Commonly appears in the phrase 二つ折りにする.
See also: 二つ折りにする
書類を二つ折りにして封筒に入れた。
I folded the document in half and put it in the envelope.
二つ折りのパンフレットを配る。
Distribute the folded-in-half pamphlets.
A verbal phrase meaning 'to fold in half,' while 二つ折り is a noun or no-adjective describing the state of being folded in half.
Compound of 二つ (two) and 折り (folding), literally 'two-fold.'