As a deity name
Name 913 of the Vishnu Sahasranāma — Mahabharata (Anushasana Parva), as taught by Bhishma to Yudhishthira on his deathbed
As a Hindi name
शिशिर · noun · masculine
एक ऋतु जो माघ और फाल्गुन मास में होती है · जाड़ा शीतकाल · हिम — Śabdasāgara
शिशिर · adj
शीलतल । ठंडा · शिशर संबंधी । शिशिर का (को॰) · जो ठंढक पहुँचावे । गर्मी हटाने या दूर करनेवाला (को॰) — Śabdasāgara
शिशिर · masculine
frost; dew; the winter season
Platts (p. 728) also records: Cool, cold, chilly, frigid, freezing
a Hindi word, a tatsama: the Sanskrit word borrowed unchanged into Hindi शिशिर — per Wiktionary’s etymology record
“Learned borrowing from Sanskrit शिशिर (śiśira).” — per Wiktionary’s etymology record
śiśira mf(ā)n. (prob. connected with √ śyai, śīta &c.) cool, chilly, cold, frigid, freezing, R.; VarBṛS. &c.
śiśira m. n. cold, coolness, hoarfrost, dew, MBh.; Kāv. &c.
As a Sanskrit word
Meaning
the cool or dewy season (comprising two months, Māgha and Phālguna, or from about the middle of January to that of March; cf. ṛtu), &c. &c.
Scripturally attested Verified derivationMultiple readings (2)Why this matches what you typed
M1 · same meaning "śiśira" is the vocative of "śiśirā" — the same word in a different grammatical case.
Gender counterpart
The kosha attests this stem in the feminine, the masculine, and the neuter — the same name serves without alteration.
Dictionary citations
śiśira mf(ā)n. (prob. connected with √ śyai, śīta &c.) cool, chilly, cold, frigid, freezing, R.; VarBṛS. &c.
śiśira m. n. cold, coolness, hoarfrost, dew, MBh.; Kāv. &c.
śiśira m. the cool or dewy season (comprising two months, Māgha and Phālguna, or from about the middle of January to that of March; cf. ṛtu), AV. &c. &c.
N. of the seventh month of the year (accord. to one reckoning)
of a mountain, R.; Hariv.; Pur.
śiśirā (ā), f. a partic. drug (= reṇukā), L.
a kind of Cyperus, L.
Alternative readings
More than one analysis survives full verification. That ambiguity is real, so we show every reading rather than pick one silently.
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