As a deity name
Name 455 of the Narasimha Sahasranāma — Brahmanda Purana / Narasimha Purana, as taught by Sages to Assembly of Devotees
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 horse's head
Scripturally attestedWhy this matches what you typed
M1 · same meaning "aśvaśirase" is the dative of "aśvaśiras" — the same word in a different grammatical case.
Dictionary citations
aśva—śiras n. a horse's head, MBh.
aśva—śiras mfn. having the head of a horse (N. of Nārāyaṇa), MBh. xii, 13100 seqq.
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