As a deity name
Name 436 of the Hanuman Sahasranāma — Rasvin Samhita / Brahmanda Purana, as taught by Lord Ram / 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
discoursing on sacred texts, a defender or expounder of the Veda, &c. &c. (inī, ˚di-tva, )
Scripturally attestedWhy this matches what you typed
M1 · same meaning "brahmavādine" is the dative of "brahmavādin" — the same word in a different grammatical case.
Dictionary citations
brahma—vādin mfn. discoursing on sacred texts, a defender or expounder of the Veda, AV. &c. &c. (inī f., Var. ; ˚di-tva n., MBh.)
one who asserts that all things are to be identified with Brahmă, a Vedāntin, Śaṃk.
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