伸べる[noberu] to lay out (a futon)
延伸[enshin] extension
屈伸[kusshin] elasticity
欠伸[akubi] yawn
差伸べる[sashinoberu] to hold out

三伸[sanshin] second postscript
伸し[noshi] stretching
伸し掛る[noshikakaru] to lean on
伸し上がる[noshiagaru] to stand on tiptoe
伸し上げる[noshiageru] to promote

一筋道[hitosujimichi] straight road
一筋繩[hitosujinawa] (piece of) rope
横筋[yokosuji] transversal
家筋[iesuji] lineage
括約筋[katsuyakukin] sphincter

筋違い[sujichigai] cramp
筋違い[sujikai] diagonal
筋骨[kinkotsu] muscles (sinews) and bones
筋書[sujigaki] synopsis

鯔背[inase] gallant
違背[ihai] violation
棄背[kihai] giving up and turning back
向背[kouhai] one's attitude
上背[uwazei] stature

側背[sokuhai] flank
団栗の背比べ[dongurinoseikurabe] having no outstanding characteristics
中肉中背[chuunikuchuuzei] medium build
中背[chuuzei] average height
二律背反[niritsuhaihan] antinomy