expression, ichidan verb
Idiomatic expression literally meaning 'the shoulder tucks can be removed', referring to the coming-of-age when a child no longer needs shoulder tucks in their kimono. Used figuratively to indicate reaching adulthood or maturity.
See also: 肩揚げが取れる
彼ももう肩揚げも取れる年頃だ。
He is now at an age where he can be considered an adult.
肩揚げも取れるようになった娘を見て、感慨深い。
Seeing my daughter who has come of age fills me with deep emotion.