योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-110, verse-14

तूर्यारवध्वनच्छैलगुहागहनकोटरम् ।
मौलिरत्नमहोद्द्योतविचूर्णिततमःपटम् ॥ १४ ॥

tūryāravadhvanacchailaguhāgahanakoṭaram ,
mauliratnamahoddyotavicūrṇitatamaḥpaṭam 14

14. tūryāravadhvanacchailaguhāgahanakoṭaram
mauliratnamahoddyotavicūrṇitatamaḥpaṭam

14. tūryāravadhvanacchailaguhāgahanakoṭaram
mauliratnamahoddyotavicūrṇitatamaḥpaṭam

14. (The army was one) whose deep mountain caves and hollows resounded with the blare of trumpets, and whose great radiance from the crest-jewels dispersed the curtain of darkness.

Words meanings summery:

• तूर्यारवध्वनच्छैलगुहागहनकोटरम् (tūryāravadhvanacchailaguhāgahanakoṭaram) - whose deep mountain caves and hollows resounded with the blare of trumpets

• मौलिरत्नमहोद्द्योतविचूर्णिततमःपटम् (mauliratnamahoddyotavicūrṇitatamaḥpaṭam) - whose great brilliance of crest jewels shattered the veil of darkness

Words meanings and morphology

तूर्यारवध्वनच्छैलगुहागहनकोटरम् (tūryāravadhvanacchailaguhāgahanakoṭaram) - whose deep mountain caves and hollows resounded with the blare of trumpets

(adjective)

Accusative, neuter, singular of tūryāravadhvanacchailaguhāgahanakoṭara

tūryāravadhvanacchailaguhāgahanakoṭara - one whose deep mountain caves and hollows resound with the blare of trumpets

Compound type : bahuvrīhi (tūryārava+dhvanat+śailaguhāgahanakoṭara)

• tūryārava – sound of trumpets, war-cry
  noun (masculine)
• dhvanat – resounding, sounding, roaring
  adjective (masculine)
  Present Active Participle
  Derived from root dhvan (to sound) with suffix śatṛ
  Root: dhvan (class 1)
• śailaguhāgahanakoṭara – deep mountain caves and hollows
  noun (neuter)

Note: Qualifies 'sainyam' (from previous verse)

मौलिरत्नमहोद्द्योतविचूर्णिततमःपटम् (mauliratnamahoddyotavicūrṇitatamaḥpaṭam) - whose great brilliance of crest jewels shattered the veil of darkness

(adjective)

Accusative, neuter, singular of mauliratnamahoddyotavicūrṇitatamaḥpaṭa

mauliratnamahoddyotavicūrṇitatamaḥpaṭa - one by whose great brilliance of crest-jewels the curtain of darkness is shattered

Compound type : bahuvrīhi (mauliratnamahoddyota+vicūrṇita+tamaḥpaṭa)

• mauliratnamahoddyota – great brilliance of crest jewels
  noun (masculine)
• vicūrṇita – shattered, crushed, pulverized
  adjective (masculine)
  Past Passive Participle
  Derived from root cūrṇ (to crush) with prefix vi and suffix kta
  Prefix: vi
  Root: cūrṇ (class 10)
• tamaḥpaṭa – curtain/veil of darkness
  noun (masculine)

Note: Qualifies 'sainyam' (from previous verse)