ahaṅkāraḥ
Sense of self; self-image; ego.
In Vedanta
The I-notion — the function of the antaḥkaraṇam that claims ownership and doership: 'I am the doer, I am the knower, this is mine.' Ahaṅkāra is the mechanism by which the limitless ātmā appears to be a particular individual. It is not the self but a thought-form (vṛtti) that attributes the qualities of the body-mind to ātmā and the qualities of ātmā to the body-mind — this is adhyāsa.