脊
セキ, せ, せい

stature, height

JLPT0 G7 S10 F2299

The relevant seal inscription form combines 肉 flesh with a representation# of a jagged *backbone* (compare 呂) → *back*; (a person's) *height*. Also, *ridge* (elevated in the middle, and depressed on the sides).

[Full Kanji Etymology List]