tall and lean figure; tall and slender build
A yojijukugo describing a person's physique as tall and slim, often with a positive or neutral connotation. Used in literary or descriptive contexts.
He is tall and slender, with a model-like physique.
痩身 means a slim body or weight loss, but does not include the tallness implied by 長身痩躯.
長身 simply means tall stature, without specifying leanness.
A yojijukugo composed of 長身 (tall stature) and 痩躯 (lean body). The exact historical derivation is uncertain, but the combination directly describes a tall and slender physique.