What is the meaning of Subtle_body?

The second of three (or more) bodies that make up the fully embodied human in various Hindu philosophies.

The embodiment of the soul or mind; part of the bodymind of the human being in syncretic, esoteric philosophy.

Those parts of the septenary, the 'seven principles of man' which constitute each human being, contrasted with the gross body, the physical human body.

Source: wiktionary.org