महाभारतः mahābhārataḥ - book-12, chapter-272, verse-17

विमानाग्र्यैर्महाराज सिद्धाश्च भरतर्षभ ।
गन्धर्वाश्च विमानाग्र्यैरप्सरोभिः समागमन् ॥१७॥

17. vimānāgryairmahārāja siddhāśca bharatarṣabha ,
gandharvāśca vimānāgryairapsarobhiḥ samāgaman.

17. vimānāgryaiḥ mahārāja siddhāḥ ca bharatarṣabha
gandharvāḥ ca vimānāgryaiḥ apsarobhiḥ samāgaman

17. mahārāja bharatarṣabha siddhāḥ ca gandharvāḥ
ca apsarobhiḥ vimānāgryaiḥ samāgaman

17. O great king, O best among the Bharatas, the perfected beings (Siddhas) and the Gandharvas, accompanied by Apsaras, assembled in splendid aerial vehicles.

Words meanings summery:

• विमानाग्र्यैः (vimānāgryaiḥ) - in splendid aerial vehicles (by excellent aerial vehicles, with foremost aerial chariots)

• महाराज (mahārāja) - O great king

• सिद्धाः (siddhāḥ) - perfected beings (Siddhas) (perfected ones, accomplished beings)

• च (ca) - and

• भरतर्षभ (bharatarṣabha) - O best among the Bharatas (O bull among Bharatas, O best of Bharatas)

• गन्धर्वाः (gandharvāḥ) - the Gandharvas (celestial musicians, Gandharvas)

• च (ca) - and

• विमानाग्र्यैः (vimānāgryaiḥ) - in splendid aerial vehicles (by excellent aerial vehicles, with foremost aerial chariots)

• अप्सरोभिः (apsarobhiḥ) - accompanied by Apsaras (with Apsaras, by Apsaras)

• समागमन् (samāgaman) - they assembled (they came together, they assembled, they met)

Words meanings and morphology

विमानाग्र्यैः (vimānāgryaiḥ) - in splendid aerial vehicles (by excellent aerial vehicles, with foremost aerial chariots)

(noun)

Instrumental, neuter, plural of vimānāgrya

vimānāgrya - excellent aerial vehicle, foremost aerial chariot

Compound type : tatpuruṣa (vimāna+agrya)

• vimāna – aerial car, celestial chariot, airplane, vehicle
  noun (neuter)
  From vi- (prefix) + root mā (to measure, build) + ana (suffix for instrument/action)
  Prefix: vi
  Root: mā (class 3)
• agrya – foremost, excellent, best, principal
  adjective
  Derived from 'agra' (tip, front)

महाराज (mahārāja) - O great king

(proper noun)

Vocative, masculine, singular of mahārāja

mahārāja - great king, emperor

Compound type : karmadhāraya (mahā+rājan)

• mahā – great, large, mighty
  adjective
• rājan – king, ruler
  noun (masculine)
  Root: rāj (class 1)

सिद्धाः (siddhāḥ) - perfected beings (Siddhas) (perfected ones, accomplished beings)

(noun)

Nominative, masculine, plural of siddha

siddha - perfected, accomplished, successful; a class of semi-divine beings

Past Passive Participle

from root sidh (to succeed, accomplish)

Root: sidh (class 4)

च (ca) - and

(indeclinable)

भरतर्षभ (bharatarṣabha) - O best among the Bharatas (O bull among Bharatas, O best of Bharatas)

(proper noun)

Vocative, masculine, singular of bharatarṣabha

bharatarṣabha - best of Bharatas, bull among Bharatas

Compound type : tatpuruṣa (bharata+ṛṣabha)

• bharata – descendant of Bharata, a king, an Indian
  proper noun (masculine)
  Root: bhṛ (class 1)
• ṛṣabha – bull, best, chief, excellent
  noun (masculine)
  Root: ṛṣ (class 1)

गन्धर्वाः (gandharvāḥ) - the Gandharvas (celestial musicians, Gandharvas)

(noun)

Nominative, masculine, plural of gandharva

gandharva - celestial musician, a class of semi-divine beings

च (ca) - and

(indeclinable)

विमानाग्र्यैः (vimānāgryaiḥ) - in splendid aerial vehicles (by excellent aerial vehicles, with foremost aerial chariots)

(noun)

Instrumental, neuter, plural of vimānāgrya

vimānāgrya - excellent aerial vehicle, foremost aerial chariot

Compound type : tatpuruṣa (vimāna+agrya)

• vimāna – aerial car, celestial chariot, airplane, vehicle
  noun (neuter)
  From vi- (prefix) + root mā (to measure, build) + ana (suffix for instrument/action)
  Prefix: vi
  Root: mā (class 3)
• agrya – foremost, excellent, best, principal
  adjective
  Derived from 'agra' (tip, front)

अप्सरोभिः (apsarobhiḥ) - accompanied by Apsaras (with Apsaras, by Apsaras)

(noun)

Instrumental, feminine, plural of apsaras

apsaras - celestial nymph, a class of divine beings

समागमन् (samāgaman) - they assembled (they came together, they assembled, they met)

(verb)

3rd person , plural, active, past imperfect (laṅ) of samāgam

Imperfect

Root gam with upasargas sam- and ā-. 3rd person plural Imperfect (laṅ) with augment 'a'.

Prefixes: sam+ā

Root: gam (class 1)