योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-38, verse-43

रथचक्रधरावर्तं रक्तार्णवमिवाष्टमम् ।
पताकाफेनपुञ्जाढ्यं चारुचामरबुद्बुदम् ॥ ४३ ॥

rathacakradharāvartaṃ raktārṇavamivāṣṭamam ,
patākāphenapuñjāḍhyaṃ cārucāmarabudbudam 43

43. ratha-cakra-dharāvartam raktārṇavam iva aṣṭamam
patākā-phena-puñjāḍhyam cāru-cāmara-buddudam

43. ratha-cakra-dharāvartam raktārṇavam iva aṣṭamam
patākā-phena-puñjāḍhyam cāru-cāmara-buddudam

43. Like an eighth ocean of blood, with chariot wheels forming its whirlpools, rich with masses of foam-like banners, and with beautiful chowries as its bubbles.

Words meanings summery:

• रथ-चक्र-धरावर्तम् (ratha-cakra-dharāvartam) - Describing the whirlpools in the blood-ocean as resembling chariot wheels. (Whose whirlpools are chariot wheels / With chariot-wheel-like whirlpools.)

• रक्तार्णवम् (raktārṇavam) - The battlefield is compared to an ocean made of blood. (ocean of blood)

• इव (iva) - like, as, as if

• अष्टमम् (aṣṭamam) - Referring to an eighth mythical ocean, beyond the traditional seven. (eighth)

• पताका-फेन-पुञ्जाढ्यम् (patākā-phena-puñjāḍhyam) - Describing the blood-ocean as having banners resembling heaps of foam. (Rich with masses of foam-like banners.)

• चारु-चामर-बुद्दुदम् (cāru-cāmara-buddudam) - Describing the beautiful chowries floating in the blood-ocean as bubbles. (Whose bubbles are beautiful chowries.)

Words meanings and morphology

रथ-चक्र-धरावर्तम् (ratha-cakra-dharāvartam) - Describing the whirlpools in the blood-ocean as resembling chariot wheels. (Whose whirlpools are chariot wheels / With chariot-wheel-like whirlpools.)

(adjective)

Accusative, neuter, singular of ratha-cakra-dharāvartam

ratha-cakra-dharāvartam - chariot-wheel-like whirlpool

Compound type : karmadhāraya (ratha+cakra+dharāvarta)

• ratha – chariot, car
  noun (masculine)
• cakra – wheel, disc, circle
  noun (neuter)
• dharāvarta – earth-whirlpool, eddy, circular motion on the ground
  noun (masculine)

रक्तार्णवम् (raktārṇavam) - The battlefield is compared to an ocean made of blood. (ocean of blood)

(noun)

Accusative, neuter, singular of raktārṇava

raktārṇava - ocean of blood

Compound type : tatpuruṣa (rakta+arṇava)

• rakta – blood; red
  noun (neuter)
• arṇava – ocean, sea
  noun (masculine)

इव (iva) - like, as, as if

(indeclinable)

अष्टमम् (aṣṭamam) - Referring to an eighth mythical ocean, beyond the traditional seven. (eighth)

(adjective)

Accusative, neuter, singular of aṣṭama

aṣṭama - eighth

पताका-फेन-पुञ्जाढ्यम् (patākā-phena-puñjāḍhyam) - Describing the blood-ocean as having banners resembling heaps of foam. (Rich with masses of foam-like banners.)

(adjective)

Accusative, neuter, singular of patākā-phena-puñjāḍhya

patākā-phena-puñjāḍhya - rich with masses of foam-like banners

Compound type : bahuvrīhi (patākā+phena+puñja+āḍhya)

• patākā – banner, flag, standard
  noun (feminine)
• phena – foam, froth, spray
  noun (masculine)
• puñja – heap, pile, mass, multitude
  noun (masculine)
• āḍhya – rich, wealthy, abundant with, full of
  adjective (neuter)

चारु-चामर-बुद्दुदम् (cāru-cāmara-buddudam) - Describing the beautiful chowries floating in the blood-ocean as bubbles. (Whose bubbles are beautiful chowries.)

(adjective)

Accusative, neuter, singular of cāru-cāmara-budduda

cāru-cāmara-budduda - whose bubbles are beautiful chowries

Compound type : bahuvrīhi (cāru+cāmara+budduda)

• cāru – beautiful, lovely, charming
  adjective (neuter)
• cāmara – chowrie, yak-tail whisk
  noun (neuter)
• budduda – bubble, globule
  noun (masculine)