योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-34, verse-51

सरभसरसवद्विसारितूर्यप्रतिरवपूरितलोकपाललोकः ।
रणगिरिरयमुग्रपक्षदक्षप्रतिसृतिवृत्त इवाम्बरे युगान्ते ॥ ५१ ॥

sarabhasarasavadvisāritūryapratiravapūritalokapālalokaḥ ,
raṇagirirayamugrapakṣadakṣapratisṛtivṛtta ivāmbare yugānte 51

51. sarabhasarasavadvīsāritūryapratiravapūritalokapālalokaḥ
raṇagiriḥ ayam ugrapakṣadakṣapratisṛtivṛttaḥ iva ambare yugānte

51. ayam raṇagiriḥ sarabhasarasavadvīsāritūryapratiravapūritalokapālalokaḥ
ugrapakṣadakṣapratisṛtivṛttaḥ iva yugānte ambare

51. This battle-mountain, which filled the realms of the world-guardians (lokapālas) with the eager and resonant echoes of its widely blaring trumpets, moved in the sky like a creature skilled in powerful wings making a hostile maneuver at the end of an eon (yuga).

Words meanings summery:

• सरभसरसवद्वीसारितूर्यप्रतिरवपूरितलोकपाललोकः (sarabhasarasavadvīsāritūryapratiravapūritalokapālalokaḥ) - describing the battle-mountain's overwhelming presence and sound (whose world of world-guardians is filled with the echoes of eagerly and resonantly spreading trumpets)

• रणगिरिः (raṇagiriḥ) - a formidable, mountain-like battle formation or warrior (battle-mountain, mountain of war)

• अयम् (ayam) - this, he

• उग्रपक्षदक्षप्रतिसृतिवृत्तः (ugrapakṣadakṣapratisṛtivṛttaḥ) - describing the battle-mountain's movement as that of a powerful, swift, and cunning creature (like one whose movement is a skillful counter-maneuver with mighty wings)

• इव (iva) - like, as if, similar to

• अम्बरे (ambare) - in the sky, in the atmosphere

• युगान्ते (yugānte) - at the time of cosmic dissolution or immense destruction (at the end of an eon)

Words meanings and morphology

सरभसरसवद्वीसारितूर्यप्रतिरवपूरितलोकपाललोकः (sarabhasarasavadvīsāritūryapratiravapūritalokapālalokaḥ) - describing the battle-mountain's overwhelming presence and sound (whose world of world-guardians is filled with the echoes of eagerly and resonantly spreading trumpets)

(adjective)

Nominative, masculine, singular of sarabhasarasavadvīsāritūryapratiravapūritalokapālaloka

sarabhasarasavadvīsāritūryapratiravapūritalokapālaloka - the realm of world-guardians filled with echoes of eagerly and vigorously spreading trumpets

Compound type : Bahuvrihi (sarabhasa+rasavat+visāri+tūrya+pratirava+pūrita+lokapāla+loka)

• sarabhasa – eager, impetuous, with energy
  adjective (masculine)
• rasavat – vigorous, resonant, full of emotion/juice
  adjective (masculine)
• visāri – spreading, extending, diffusing
  adjective (masculine)
  Agent Noun/Adjective from √sṛ
  Derived from verbal root sṛ- with prefix vi- and the suffix -in (ṇini)
  Prefix: vi
  Root: sṛ (class 1)
• tūrya – trumpet, musical instrument, war-horn
  noun (neuter)
• pratirava – echo, reverberation, counter-sound
  noun (masculine)
  Prefix: prati
• pūrita – filled, full, accomplished
  adjective (masculine)
  Past Passive Participle
  Derived from verbal root pūr (to fill)
  Root: pūr (class 10)
• lokapāla – guardian of the world (lokapāla)
  noun (masculine)
• loka – world, realm, abode, people
  noun (masculine)

रणगिरिः (raṇagiriḥ) - a formidable, mountain-like battle formation or warrior (battle-mountain, mountain of war)

(noun)

Nominative, masculine, singular of raṇagiri

raṇagiri - battle-mountain

Compound type : Tatpurusha (raṇa+giri)

• raṇa – battle, war, combat
  noun (masculine)
• giri – mountain, hill
  noun (masculine)

अयम् (ayam) - this, he

(pronoun)

Nominative, masculine, singular of idam

idam - this, this one

उग्रपक्षदक्षप्रतिसृतिवृत्तः (ugrapakṣadakṣapratisṛtivṛttaḥ) - describing the battle-mountain's movement as that of a powerful, swift, and cunning creature (like one whose movement is a skillful counter-maneuver with mighty wings)

(adjective)

Nominative, masculine, singular of ugrapakṣadakṣapratisṛtivṛtta

ugrapakṣadakṣapratisṛtivṛtta - one whose movement/action is a skillful counter-movement with mighty wings

Compound type : Bahuvrihi (ugra+pakṣa+dakṣa+pratisṛti+vṛtta)

• ugra – fierce, terrible, mighty
  adjective (masculine)
• pakṣa – wing, side, party
  noun (masculine)
• dakṣa – skillful, capable, clever
  adjective (masculine)
• pratisṛti – counter-movement, hostile approach, retreat
  noun (feminine)
  Derived from verbal root sṛ- with prefix prati-
  Prefix: prati
  Root: sṛ (class 1)
• vṛtta – moved, acted, behaved, occurred
  adjective (masculine)
  Past Passive Participle
  Derived from verbal root vṛt (to turn, be, exist)
  Root: vṛt (class 1)

इव (iva) - like, as if, similar to

(indeclinable)

अम्बरे (ambare) - in the sky, in the atmosphere

(noun)

Locative, neuter, singular of ambara

ambara - sky, atmosphere, clothing

युगान्ते (yugānte) - at the time of cosmic dissolution or immense destruction (at the end of an eon)

(noun)

Locative, masculine, singular of yugānta

yugānta - end of an eon (yuga), end of a world-age

Compound type : Tatpurusha (yuga+anta)

• yuga – eon, age, epoch, pair
  noun (neuter)
• anta – end, limit, boundary
  noun (masculine)