背筋力

はいきんりょく

strength of one's back

浅背筋

あさせすじ

Superficial Back Muscles

背筋鼠

せすじねずみ セスジネズミ

striped field mouse (Apodemus agrarius)

広背筋

こうはいきん

latissimus dorsi muscle

中間層背筋

ちゅーかんそーせすじ

Intermediate Back Muscles

背筋を伸ばす

せすじをのばす

to straighten up one's back (e.g. stand up straight, sit up straight), to hold one's head high

背筋が寒くなる

せすじがさむくなる

a chill runs down one's spine

背

せ せい

height, stature

筋

すじ スジ きん

muscle

背割

せわり

slicing a fish down its back

背反

はいはん

revolting, rebellion, going against, contradiction, antinomy

背戸

せど

back door or entrance

背圧

はいあつ

back pressure

背革

せがわ

back of a leatherbound book

背臨

はいりん

copying from a model without looking at it (calligraphy)

背走

はいそう

running backwards

腹背

ふくはい

back and front, opposition in the heart

背約

はいやく せやく

a broken promise, breaking one's word

背痛

はいつう

back pain