As a deity name
Name 35 of the Lakshmi Sahasranāma — Skanda Purana / Sanat Kumara Samhita, as taught by Sages Sanatkumara and Devotees
As a Hindi name
कालरात्रि · noun · feminine
अंधेरी और भयावनी रात · ब्रह्मा की रात्रि जिसमें सारी सृष्टि प्रलय को प्राप्त रहती है, केवल नारायण ही रहते हैं । प्रलय की रात · मृत्यु की रात्रि — Śabdasāgara
As a Sanskrit word
Meaning
a particular night in the life of a man (on the seventh day of the seventh month of the seventy-seventh year, after which period a man is exempt from attention to the usual ordinan…
Scripturally attested Verified derivationMultiple readings (2)Why this matches what you typed
M1 · same meaning "kālarātri" is the vocative of "kālarātrī" — the same word in a different grammatical case.
Dictionary citations
1. kāla—rātri f. a dark night, W.
(for 2. -rātri See p. 278, col. 3.)
2. kāla—rātri f. the night of all-destroying time, night of destruction at the end of the world (often personified and identified with Durgā or with one of her Śaktis), MBh.; R. &c.
the night of a man's death, Pañcad.
a particular night in the life of a man (on the seventh day of the seventh month of the seventy-seventh year, after which period a man is exempt from attention to the usual ordinances), L.
kāla—rātrī f. a dark night, W.
kāla—rātrī f. the night of all-destroying time, night of destruction at the end of the world (often personified and identified with Durgā or with one of her Śaktis), MBh.; R. &c.
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