As a Hindi name
नहीं
no, not (negative response to a yes-no question); no, not (used for negation of statements in the indicative and contrafactual moods)
Platts (p. 1168) also records: Blueness, blackness, darkness
a Hindi word, a tadbhava: evolved from the Sanskrit through Prakrit नहि — per Wiktionary’s etymology record
“Inherited from Prakrit 𑀡𑀳𑀺 (ṇahi) (with spontaneous nasalization), from Sanskrit नहि (nahí, “surely not”), from Proto-Indo-Iranian *naǰʰí, from earlier *ná gʲʰí, from Proto-Indo-European *né + *gʰí. Cognate with Assamese নাই (nai), Bengali নাই (nai), Braj नहीं (nahī̃), Marathi ना…” — per Wiktionary’s etymology record
na—hi See na-hi.
na-hi (na-hi, MaitrS. & ŚBr.) ind. (g. cādi) for not, surely not, by no means, not at all (often strengthened by other particles, as aṅga, nu, sma), RV.; &c. (nahikam, g. cādi).
As a Sanskrit word
Meaning
blueness, blackness, darkness
Verified derivationWhy this matches what you typed
The spelling you confirmed, नीलिमन्, is itself a dictionary headword — no grammatical transformation stands between what you typed and the meaning above.
Dictionary citations
nīliman m. blueness, blackness, darkness, Kāv.
nīliman m. Blue colour, darkness, blueness; Māl. 5. 6.
Caveats
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