The subtle body, spirit, etheric as opposed to the physical body.
"These fifteen attributes (see Chitta) plus Mind and Intelligence constitute the seventeen "fine limbs" of the subtle body, the Lingasarira." (Swami Sri Yukteswar, The Holy Science, Sutra 7-10)
Figure 7.5 - Triune Composition of Dualities of Matter and Energy (click to enlarge)
See Also
7.8 - Matter and Spirit are Opposite Poles
8.26 - Law of Force
18.10 - Body Motivated by Mind Force
18.12 - Body Motivated by Will Force
18.15 - Body Mind and Spirit Relations - Cayce
Body
Chitta
Consciousness
Ego
Endocrine System
Entropy
Etheric
Intelligence
Meditation
Mind
Neutral
Sense
Subtle Energy Physics
Syntropy
Table of Energy Emanations from the Body
Thinking
Thought
Water in the Body