Shirabe
背筋

背筋せすじ

Common Noun
English jmdict
1
noun (common) (futsuumeishi) spine;line of the backbone
それを見てうれしくて背筋がぞくぞくした。
The sight sent chills of delight up my spine.
2
noun (common) (futsuumeishi) seam down the back (of clothing)
Other forms 背すじ 【せすじ】
English jmdict
1
noun (common) (futsuumeishi) muscles of the back;back muscles