As a deity name
Name 154 of the Lakshmi Sahasranāma — Skanda Purana / Sanat Kumara Samhita, as taught by Sages Sanatkumara and Devotees
Name 512 of the Saraswati Sahasranāma — Skanda Purana, as taught by Lord Brahma / Sages
As a Hindi name
ब्रह्मचारिणी · noun · feminine
ब्रह्मचर्य व्रत धारण करनेवाली स्त्री · दुर्गा । पार्वती । गौरी · सरस्वती — Śabdasāgara
As a Sanskrit word
Meaning
a woman who observes the vow of chastity
Scripturally attested Verified derivationMultiple readings (2)Why this matches what you typed
M1 · same meaning "brahmacāriṇī" is the feminine form of "brahmacārin" — the same word with the feminine ending (vocative dual).
Dictionary citations
brahma—cāriṇī (iṇī), f. N. of Durgā, DevīP.
a woman who observes the vow of chastity, W.
Clerodendrum Siphonantus, L. (v.l. ˚raṇī)
Thespesia Populneoides, L.
= karuṇī, L.
brahma—cārin mf(iṇī)n. practising sacred study as an unmarried student, observing chastity, RV. &c. &c.
brahma—cārin m. a young Brāhman who is a student of the Veda (under a preceptor) or who practises chastity, a young Br˚ before marriage (in the first period of his life), AV.; Mn.; MBh. &c. (cf. āśrama and IW. 192 &c.; RTL. 84 &c.; the N. Brahma-cārin is also given to older unmarried Brāhmans, esp. if versed in the Veda, and by the Tantras to any person whose chief virtue is continence)
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