As a deity name
Name 829 of the Gayatri Sahasranāma — Devi Bhagavata Purana, as taught by Sages
Name 908 of the Saraswati Sahasranāma — Skanda Purana, as taught by Lord Brahma / Sages
As a Hindi name
No reading on this path — this spelling has no entry in our Hindi sources, and no near neighbour is attested there either. We say so rather than invent one.
As a Sanskrit word
Meaning
a sort of female demon or fiend (attached to the service of Durgā and frequently, like a sylph or fairy, maintaining intercourse with mortals)
Scripturally attestedWhy this matches what you typed
M1 · same meaning "yakṣiṇyai" is the dative of "yakṣiṇī" — the same word in a different grammatical case.
Dictionary citations
yakṣiṇī f. of yakṣin
a female Yakṣa, MBh.; R. &c.
Caveats
Sources contain errors and engines have limits; every claim above carries its citation so you can verify it. This is guidance about names and their sources — not religious or astrological consultation. How we work · Our sources