योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-19

वहद्विमानसीत्कारमुष्टिग्राह्यघनध्वनि ।
ग्रहर्क्षघनसंचारात्प्रचलद्वातयन्त्रकम् ॥ १९ ॥

vahadvimānasītkāramuṣṭigrāhyaghanadhvani ,
graharkṣaghanasaṃcārātpracaladvātayantrakam 19

19. vahadvimānasītkāramuṣṭigrāhyaghanadhvani
graharkṣaghanasaṃcārātpracaladvātayantrakam

19. vahadvimānasītkāramuṣṭigrāhyaghanadhvani
graharkṣaghanasaṃcārātpracaladvātayantrakam

19. A place filled with the loud, palpable sound of whizzing, moving celestial vehicles (vimāna); and containing wind-machines (vāta-yantraka) set in motion by the constant movement of planets (graha) and constellations (ṛkṣa).

Words meanings summery:

• वहद्विमानसीत्कारमुष्टिग्राह्यघनध्वनि (vahadvimānasītkāramuṣṭigrāhyaghanadhvani) - Describing a celestial abode or region, characterized by a specific type of intense and tangible sound. (Having the loud, palpable sound of whizzing, moving celestial vehicles.)

• ग्रहर्क्षघनसंचारात्प्रचलद्वातयन्त्रकम् (graharkṣaghanasaṁcārātpracaladvātayantrakam) - Describing a celestial abode or region, characterized by atmospheric phenomena influenced by celestial bodies. (Having wind-machines moving due to the dense passage of planets and constellations.)

Words meanings and morphology

वहद्विमानसीत्कारमुष्टिग्राह्यघनध्वनि (vahadvimānasītkāramuṣṭigrāhyaghanadhvani) - Describing a celestial abode or region, characterized by a specific type of intense and tangible sound. (Having the loud, palpable sound of whizzing, moving celestial vehicles.)

(adjective)

Nominative, masculine, singular of vahadvimānasītkāramuṣṭigrāhyaghanadhvani

vahadvimānasītkāramuṣṭigrāhyaghanadhvani - The dense, palpable sound of the whizzing of moving celestial vehicles.

Compound type : tatpuruṣa (vahat+vimāna+sītkāra+muṣṭi+grāhya+ghana+dhvani)

• vahat – moving, carrying, flowing
  participle
  Present Active Participle
  From verb root √vah (to carry, flow, move), class 1.
  Root: √vah (class 1)
• vimāna – celestial car, airplane, palace, temple
  noun (neuter)
• sītkāra – hissing, whizzing sound, sizzling sound
  noun (masculine)
• muṣṭi – fist, handful, grip
  noun (feminine)
• grāhya – to be grasped, graspable, palpable, tangible, acceptable
  participle
  Gerundive
  From verb root √grah (to seize, grasp), with suffix -ya.
  Root: √grah (class 9)
• ghana – dense, solid, compact, thick, intense, loud (for sound), cloud
  adjective
• dhvani – sound, noise, echo, tone, resonance
  noun (masculine)
  Root: √dhvan (class 1)

Note: This is an adjective in apposition to an implied noun.

ग्रहर्क्षघनसंचारात्प्रचलद्वातयन्त्रकम् (graharkṣaghanasaṁcārātpracaladvātayantrakam) - Describing a celestial abode or region, characterized by atmospheric phenomena influenced by celestial bodies. (Having wind-machines moving due to the dense passage of planets and constellations.)

(adjective)

Nominative, neuter, singular of graharkṣaghanasaṃcārātpracaladvātayantraka

graharkṣaghanasaṁcārātpracaladvātayantraka - Wind-machines (or air currents) that move due to the dense movement of planets and stars.

Compound type : tatpuruṣa (graha+ṛkṣa+ghana+saṃcāra+pracalat+vāta+yantraka)

• graha – planet, seizer, grasping
  noun (masculine)
  Root: √grah (class 9)
• ṛkṣa – star, constellation, bear (animal)
  noun (neuter)
• ghana – dense, solid, compact, thick, intense, loud (for sound), cloud
  adjective
• saṃcāra – movement, passage, going about
  noun (masculine)
  Prefix: sam
  Root: √car (class 1)
• pracalat – moving, shaking, vibrating
  participle
  Present Active Participle
  From verb root √cal (to move) with prefix pra.
  Prefix: pra
  Root: √cal (class 1)
• vāta – wind, air, atmosphere
  noun (masculine)
  Root: √vā (class 2)
• yantraka – machine, instrument, device, contrivance
  noun (neuter)
  Root: √yam (class 1)

Note: This is an adjective in apposition to an implied noun.