योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-113, verse-20

उद्ग्रीवकूर्ममकरनिगीर्णौर्णनरोत्करान् ।
ऊर्मिबिम्बितसप्ताश्वसहस्रार्कनभोनिभान् ॥ २० ॥

udgrīvakūrmamakaranigīrṇaurṇanarotkarān ,
ūrmibimbitasaptāśvasahasrārkanabhonibhān 20

20. udgrīvakūrmamakaranigīrṇanarautkarān
ūrmibimbitasaptāśvasahasrārkanabhonibhān

20. udgrīvakūrmamakaranigīrṇanarautkarān
ūrmibimbitasaptāśvasahasrārkanabhonibhān

20. Describing vast waters: which contain multitudes of men swallowed by sea monsters and turtles with uplifted necks, and which, with their waves reflecting thousands of suns (each with its seven horses), resemble a sky filled with a thousand suns.

Words meanings summery:

• उद्ग्रीवकूर्ममकरनिगीर्णनरौत्करान् (udgrīvakūrmamakaranigīrṇanarautkarān) - containing multitudes of men swallowed by sea monsters and turtles with uplifted necks

• ऊर्मिबिम्बितसप्ताश्वसहस्रार्कनभोनिभान् (ūrmibimbitasaptāśvasahasrārkanabhonibhān) - resembling a sky with thousands of suns whose seven-horsed reflections appear on the waves

Words meanings and morphology

उद्ग्रीवकूर्ममकरनिगीर्णनरौत्करान् (udgrīvakūrmamakaranigīrṇanarautkarān) - containing multitudes of men swallowed by sea monsters and turtles with uplifted necks

(adjective)

Accusative, masculine, plural of udgrīvakūrmamakaranigīrṇanarautkara

udgrīvakūrmamakaranigīrṇanarautkara - having multitudes of men swallowed by sea monsters and turtles with uplifted necks

Compound type : bahuvrihi (udgrīva+kūrma+makara+nigīrṇa+nara+utkara)

• udgrīva – with uplifted neck, tall-necked
  adjective (masculine)
  Prefix: ud
• kūrma – turtle, tortoise
  noun (masculine)
• makara – sea monster, crocodile
  noun (masculine)
• nigīrṇa – swallowed, devoured
  adjective (masculine)
  Past Passive Participle
  Derived from root gṛ (to swallow) with prefix ni.
  Prefix: ni
  Root: gṛ (class 6)
• nara – man, human being
  noun (masculine)
• utkara – multitude, heap, mass
  noun (masculine)
  Prefix: ud

ऊर्मिबिम्बितसप्ताश्वसहस्रार्कनभोनिभान् (ūrmibimbitasaptāśvasahasrārkanabhonibhān) - resembling a sky with thousands of suns whose seven-horsed reflections appear on the waves

(adjective)

Accusative, masculine, plural of ūrmibimbitasaptāśvasahasrārkanabhonibha

ūrmibimbitasaptāśvasahasrārkanabhonibha - resembling a sky with a thousand suns, with the seven-horsed sun (reflections) cast on the waves

Compound type : bahuvrihi (ūrmi+bimbita+saptāśva+sahasra+arka+nabhas+nibha)

• ūrmi – wave
  noun (feminine)
• bimbita – reflected, mirrored
  adjective (masculine)
  Past Passive Participle
  Derived from root bimb (to reflect) or denominal from bimba (reflection).
  Root: bimb (class 10)
• saptāśva – having seven horses (epithet of the Sun)
  adjective (masculine)
• sahasra – thousand
  numeral (neuter)
• arka – sun, ray
  noun (masculine)
• nabhas – sky, atmosphere, heaven
  noun (neuter)
• nibha – like, resembling, similar
  adjective (masculine)