योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-71, verse-39

उल्लसद्विपुलावर्तप्रोत्क्षिप्तमकरोत्कराः ।
विमज्जन्निस्तलावर्तनिगीर्णगिरिकन्दराः ॥ ३९ ॥

ullasadvipulāvartaprotkṣiptamakarotkarāḥ ,
vimajjannistalāvartanigīrṇagirikandarāḥ 39

39. ullasadvipulāvartaprotkṣiptamakarotkarāḥ
vimajjannistalāvartanigīrṇagirikandarāḥ

39. ullasadvipulāvartaprotkṣiptamakarotkarāḥ
vimajjannistalāvartanigīrṇagirikandarāḥ

39. These waters are with vast, surging whirlpools that throw up multitudes of crocodiles, and with bottomless, submerging whirlpools that have swallowed mountain caves.

Words meanings summery:

• उल्लसद्विपुलावर्तप्रोत्क्षिप्तमकरोत्कराः (ullasadvipulāvartaprotkṣiptamakarotkarāḥ) - with vast, surging whirlpools that throw up multitudes of crocodiles

• विमज्जन्निस्तलावर्तनिगीर्णगिरिकन्दराः (vimajjannistalāvartanigīrṇagirikandarāḥ) - with bottomless, submerging whirlpools that have swallowed mountain caves

Words meanings and morphology

उल्लसद्विपुलावर्तप्रोत्क्षिप्तमकरोत्कराः (ullasadvipulāvartaprotkṣiptamakarotkarāḥ) - with vast, surging whirlpools that throw up multitudes of crocodiles

(adjective)

Nominative, masculine, plural of ullasadvipulāvartaprotkṣiptamakarotkara

ullasadvipulāvartaprotkṣiptamakarotkara - one having multitudes of crocodiles thrown up by vast, surging whirlpools

Compound type : bahuvrīhi (ullasat+vipulāvarta+protkṣipta+makarotkara)

• ullasat – surging, rising up, gleaming
  adjective (masculine)
  Present Active Participle
  Derived from root las (to shine, sport) with prefix ut-
  Prefix: ut
  Root: las (class 1)
• vipulāvarta – vast whirlpool
  noun (masculine)
• protkṣipta – thrown up, ejected
  adjective (masculine)
  Past Passive Participle
  Derived from root kṣip (to throw) with prefixes pra- and ut-
  Prefixes: pra+ut
  Root: kṣip (class 6)
• makarotkara – multitude of crocodiles
  noun (masculine)

विमज्जन्निस्तलावर्तनिगीर्णगिरिकन्दराः (vimajjannistalāvartanigīrṇagirikandarāḥ) - with bottomless, submerging whirlpools that have swallowed mountain caves

(adjective)

Nominative, masculine, plural of vimajjannistalāvartanigīrṇagirikandara

vimajjannistalāvartanigīrṇagirikandara - one having mountain caves swallowed by bottomless, submerging whirlpools

Compound type : bahuvrīhi (vimajjat+nistalāvarta+nigīrṇa+girikandara)

• vimajjat – submerging, plunging, sinking
  adjective (masculine)
  Present Active Participle
  Derived from root majj (to sink, plunge) with prefix vi-
  Prefix: vi
  Root: majj (class 6)
• nistalāvarta – bottomless whirlpool
  noun (masculine)
• nigīrṇa – swallowed, consumed
  adjective (masculine)
  Past Passive Participle
  Derived from root gṝ (to swallow) with prefix ni-
  Prefix: ni
  Root: gṝ (class 6)
• girikandara – mountain cave, mountain cavern
  noun (neuter)