Avalambaka kapha

Subdosha of kapha. Protects lungs and respiratory tissues. Related to attachment and holding on to things and to weight gain. Located in chest (heart and lungs).

One of the five subtypes of kapha; that aspect of kapha that resides primarily in the lungs, respiratory tract, heart, and spine; it governs the delivery of prana to every cell, tissue, and organ, maintains the tone and permeability of the alveoli, protects the heart muscle, and tends to the tone of the muscular portion of the bronchi.
Source: http://www.banyanbotanicals.com/info/ayurvedic-living/learning-ayurveda/glossary-of-ayurvedic-terms/