योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-28, verse-24

अन्योन्यमायुधशिलाचलवृक्षवर्षैर्मेरुप्रमाणकठिनाङ्गनिघर्षणैश्च ।
आसीद्रणं चटचटास्फुटदन्तरिक्षं कल्पक्षयान्तमिव भीमभरोग्रनादैः ॥ २४ ॥

anyonyamāyudhaśilācalavṛkṣavarṣairmerupramāṇakaṭhināṅganigharṣaṇaiśca ,
āsīdraṇaṃ caṭacaṭāsphuṭadantarikṣaṃ kalpakṣayāntamiva bhīmabharogranādaiḥ 24

24. anyonyam āyudhaśilācalavṛkṣavarṣaiḥ
merupramāṇakaṭhināṅganigharṣaṇaiḥ ca
āsīt raṇam caṭacaṭāsphuṭadantarikṣam
kalpakṣayāntam iva bhīmabharogranādaiḥ

24. anyonyam āyudhaśilācalavṛkṣavarṣaiḥ
merupramāṇakaṭhināṅganigharṣaṇaiḥ ca
bhīmabharogranādaiḥ caṭacaṭāsphuṭadantarikṣam
raṇam kalpakṣayāntam iva āsīt

24. The battle, with its terrifying and fiercely intense roars and the sky splitting with crackling sounds, became like the end of a cosmic destruction (kalpakṣaya). This occurred as they showered each other with weapons, rocks, mountains, and trees, and as their hard bodies, massive as Mount Meru, ground against one another.

Words meanings summery:

• अन्योन्यम् (anyonyam) - mutually, upon each other

• आयुधशिलाचलवृक्षवर्षैः (āyudhaśilācalavṛkṣavarṣaiḥ) - by showers of weapons, rocks, mountains, and trees

• मेरुप्रमाणकठिनाङ्गनिघर्षणैः (merupramāṇakaṭhināṅganigharṣaṇaiḥ) - by the crushing of hard bodies as massive as Mount Meru

• च (ca) - and

• आसीत् (āsīt) - it was, it became

• रणम् (raṇam) - battle, war

• चटचटास्फुटदन्तरिक्षम् (caṭacaṭāsphuṭadantarikṣam) - with the sky bursting with crackling sounds

• कल्पक्षयान्तम् (kalpakṣayāntam) - like the end of a cosmic cycle

• इव (iva) - like, as if

• भीमभरोग्रनादैः (bhīmabharogranādaiḥ) - by terrifying, intensely fierce roars/sounds

Words meanings and morphology

अन्योन्यम् (anyonyam) - mutually, upon each other

(indeclinable)

Repetition of anya (other).

आयुधशिलाचलवृक्षवर्षैः (āyudhaśilācalavṛkṣavarṣaiḥ) - by showers of weapons, rocks, mountains, and trees

(noun)

Instrumental, masculine, plural of āyudha-śilācala-vṛkṣa-varṣa

āyudha-śilācala-vṛkṣa-varṣa - showers of weapons, rocks, mountains, and trees

Compound type : dvandva (āyudha+śilā+acala+vṛkṣa+varṣa)

• āyudha – weapon, implement
  noun (neuter)
• śilā – rock, stone
  noun (feminine)
• acala – mountain
  noun (masculine)
• vṛkṣa – tree
  noun (masculine)
• varṣa – rain, shower
  noun (neuter)

मेरुप्रमाणकठिनाङ्गनिघर्षणैः (merupramāṇakaṭhināṅganigharṣaṇaiḥ) - by the crushing of hard bodies as massive as Mount Meru

(noun)

Instrumental, masculine, plural of meru-pramāṇa-kaṭhina-aṅga-nigharṣaṇa

meru-pramāṇa-kaṭhina-aṅga-nigharṣaṇa - crushing of hard bodies as massive as Mount Meru

Compound type : tatpuruṣa (meru+pramāṇa+kaṭhina+aṅga+nigharṣaṇa)

• meru – Mount Meru (mythical mountain)
  noun (masculine)
• pramāṇa – measure, size, standard
  noun (neuter)
• kaṭhina – hard, firm, rigid
  adjective (neuter)
• aṅga – body, limb
  noun (neuter)
• nigharṣaṇa – crushing, rubbing, friction
  noun (neuter)
  From ni-ghṛṣ (to rub against).
  Prefix: ni
  Root: ghṛṣ (class 1)

च (ca) - and

(indeclinable)

Conjunction.

आसीत् (āsīt) - it was, it became

(verb)

3rd person , singular, active, past imperfect (laṅ) of as

Imperfect Tense

Third person singular imperfect active.

Root: as (class 2)

रणम् (raṇam) - battle, war

(noun)

Nominative, neuter, singular of raṇa

raṇa - battle, war, conflict, roar

From root raṇ (to rejoice, sound).

Root: raṇ (class 1)

Note: Subject of āsīt.

चटचटास्फुटदन्तरिक्षम् (caṭacaṭāsphuṭadantarikṣam) - with the sky bursting with crackling sounds

(adjective)

Nominative, neuter, singular of caṭacaṭā-sphuṭat-antarikṣa

caṭacaṭā-sphuṭat-antarikṣa - with the sky splitting/bursting with crackling sounds

Compound type : bahuvrīhi (caṭacaṭā+sphuṭat+antarikṣa)

• caṭacaṭā – onomatopoeic for crackling/snapping sound
  indeclinable
• sphuṭat – bursting, splitting, breaking
  adjective (neuter)
  Present Active Participle
  From root sphuṭ (to burst, open).
  Root: sphuṭ (class 1)
• antarikṣa – sky, atmosphere, space
  noun (neuter)

कल्पक्षयान्तम् (kalpakṣayāntam) - like the end of a cosmic cycle

(noun)

Nominative, masculine, singular of kalpa-kṣaya-anta

kalpa-kṣaya-anta - the end of a cosmic cycle/destruction

Compound type : tatpuruṣa (kalpa+kṣaya+anta)

• kalpa – cosmic cycle, eon
  noun (masculine)
• kṣaya – destruction, end, decline
  noun (masculine)
• anta – end, limit, boundary
  noun (masculine)

इव (iva) - like, as if

(indeclinable)

Particle expressing comparison.

भीमभरोग्रनादैः (bhīmabharogranādaiḥ) - by terrifying, intensely fierce roars/sounds

(noun)

Instrumental, masculine, plural of bhīma-bhara-ugra-nāda

bhīma-bhara-ugra-nāda - terrifying, intensely fierce roars/sounds

Compound type : tatpuruṣa (bhīma+bhara+ugra+nāda)

• bhīma – terrifying, dreadful
  adjective (masculine)
• bhara – burden, mass, intensity
  noun (masculine)
• ugra – fierce, terrible, formidable
  adjective (masculine)
• nāda – roar, sound, cry
  noun (masculine)