As a deity name
Name 477 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
imparting religious knowledge
Scripturally attestedWhy this matches what you typed
M1 · same meaning "brahmadāyai" is the dative of "brahmada" — the same word in a different grammatical case.
Dictionary citations
brahma—da mfn. imparting religious knowledge, Mn.
brahmada m. (-daḥ) A spiritual teacher. E. brahma the Veda or holy knowledge, and da who gives; also brahmadātṛ brahmadāyin, &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