As a Hindi name
पूर्णि · noun · feminine
पूर्णिमा । पूर्णमासी — Śabdasāgara
As a Sanskrit word
Meaning
a flood, stream (= pūra)
Verified derivationWhy this matches what you typed
The spelling you confirmed, पूर्णि, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
Monier-Williams (1899) · पूर्णि
pūrṇi f. a flood, stream (= pūra), L.
Caveats
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