Organic structure of the sense-organ- A type of Dravyendriya (physical sense-organ);
the external and internal material (anatomical) structure of sense-organ.
nirvṛttirnāma prativiśiṣṭaḥ saṃsthānaviśeṣaḥ. sāpi dvidhā-bhāhyā abhyantarā ca.
(NandīMaVṛ Pa 75)