As a deity name
Name 985 of the Durga Sahasranāma — Kula Arnava Tantra / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
As a Hindi name
वीरसू · noun · masculine
वह स्त्री जो पुत्रों को ही जन्म दे · वह स्त्री जो वीर पुत्र प्रसव करती हो । वीरजननी — Śabdasāgara
As a Sanskrit word
Meaning
‘hero-bearing’, the mother of a hero (-tva ), &c. &c.
Scripturally attested Verified derivationMultiple readings (3)Why this matches what you typed
The spelling you confirmed, वीरसू, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
vīra—sū f. ‘hero-bearing’, the mother of a hero (-tva n.), RV. &c. &c.
the mother of a male child, L.
vīrasū f. (-sūḥ) 1 The mother of a hero. 2 The mother of a male child. E. vīra a hero, and sū mother.
Alternative readings
More than one analysis survives full verification. That ambiguity is real, so we show every reading rather than pick one silently.
Caveats
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