As a deity name
Name 60 of the Hanuman Sahasranāma — Rasvin Samhita / Brahmanda Purana, as taught by Lord Ram / Sages
Name 361 of the Narasimha Sahasranāma — Brahmanda Purana / Narasimha Purana, as taught by Sages to Assembly of Devotees
Name 319 of the Rama Sahasranāma — Padma Purana / Skanda Purana, as taught by Lord Shiva to Goddess Parvati
Name 67 of the Vishnu Sahasranāma — Mahabharata (Anushasana Parva), as taught by Bhishma to Yudhishthira on his deathbed
As a Hindi name
ज्येष्ठ · adj
बड़ा । जेठा । जैसे, ज्येष्ठ भ्राता · वृद्ध । बड़ा । बूढ़ा़ — Śabdasāgara
ज्येष्ठ · noun · masculine
जेठ का महीना । वह महीना जिसमें ज्येष्ठा नक्षत्र में पूर्णिमा का चंद्रमा उदय हो । यह वर्ष का तीसरा और ग्रीष्म ऋतु का पहला महीना है · वह वर्ष जिसमें बृहस्पति का उदय ज्येष्ठा नक्षत्र में हो · सामगान का एक भेद — Śabdasāgara
ज्येष्ठ · jyeshṭha · adj.
Eldest-born, oldest, &c. ( = jeṭh, and jeṭhā, qq.v.) — Platts (1884), digital edition courtesy DSAL, University of Chicago, p. 415
ज्येष्ठ · masculine
Jyeshth (third month of the Hindu lunar calendar)
ज्येष्ठ
eldest, first-born
a Hindi word, a tatsama: the Sanskrit word borrowed unchanged into Hindi ज्येष्ठ — per Wiktionary’s etymology record
“Borrowed from Sanskrit ज्येष्ठ (jyeṣṭha). Doublet of जेठ (jeṭh).” — per Wiktionary’s etymology record
jyeṣṭha mfn. (Pāṇ. v, 3, 61) most excellent, pre-eminent, first, chief, best, greatest, (m.) the chief, RV. &c. (ifc. [e.g. vacana-, ‘best in speech’, Kāś.] Pāṇ. vi, 2, 25)
more excellent than (abl.), MBh. xiii, 7205
As a Sanskrit word
Meaning
most excellent, pre-eminent, first, chief, best, greatest, the chief, &c. (ifc. [e.g. vacana-, ‘best in speech’, ] )
Scripturally attested Verified derivationWhy this matches what you typed
M1 · same meaning "jyeṣṭha" is the vocative of "jyeṣṭhā" — 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
jyeṣṭha mfn. (Pāṇ. v, 3, 61) most excellent, pre-eminent, first, chief, best, greatest, (m.) the chief, RV. &c. (ifc. [e.g. vacana-, ‘best in speech’, Kāś.] Pāṇ. vi, 2, 25)
more excellent than (abl.), MBh. xiii, 7205
(in math. with pada or mūla) greatest (root [square root] extracted from the quantity operated upon)
(Pāṇ. v, 3, 62; ˚ṣṭha) eldest, (m.) the eldest brother, RV. iv, 33, 5; x, 11, 2; AV. &c.
jyeṣṭha m. (scil. ghaṭa) the ascending bucket (in a machine for raising water), Kuval. 46
jyeṣṭhā f. (g. ajādi) the 16th (or accord. to modern reckoning 18th) lunar mansion (sacred to Indra), AV. xix, 7, 3 (parox.), TBr. iii, 1, 2; PārGṛ.; MBh. &c. (also pl.)
f. the eldest wife, Mn. ix, 122 & 124
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