The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Avatarika

Avatarika

प्रश्नसमाप्तिं द्योतयति ॥

In plain words

With that word, the string of questions comes to its close.

Close to the Sanskrit

It indicates the completion of the question.