noun, noun or participle which takes 'suru'
standing on tiptoes
Refers to the action or state of standing on the balls of the feet with heels raised. Often used with する to mean 'to stand on tiptoes'.
彼は爪立ちをして棚の上の本を取った。
He stood on tiptoes and took the book from the shelf.
バレリーナは爪立ちでくるっと回った
The ballerina spun around on her tiptoes.