noun
Refers specifically to a person's height. Not used for the height of objects or buildings; use 高さ for those.
身長は何センチですか。
How tall are you? (lit. What is your height in centimeters?)
彼は身長が高い。
He is tall.
Compound of 身 (body) and 長 (length). The reading is on'yomi, suggesting a Sino-Japanese origin.