वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-4, chapter-49, verse-21

तरुणादित्यसंकाशान् वैदूर्यमयवेदिकान् ।
नीलवैदूर्यवर्णाश्च पद्मिनीः पतगावृताः ॥२१॥

21. taruṇādityasaṃkāśān vaidūryamayavedikān ,
nīlavaidūryavarṇāśca padminīḥ patagāvṛtāḥ.

21. taruṇādityasaṃkāśān vaidūryamayavedikān
nīlavaidūryavarṇāḥ ca padminīḥ patagāvṛtāḥ

21. padminīḥ taruṇādityasaṃkāśān vaidūryamayavedikān
ca nīlavaidūryavarṇāḥ patagāvṛtāḥ

21. They saw lotus ponds resembling the rising sun, with altars made of lapis lazuli, and which were of blue lapis lazuli color and filled with birds.

Words meanings summery:

• तरुणादित्यसंकाशान् (taruṇādityasaṁkāśān) - resembling the rising sun

• वैदूर्यमयवेदिकान् (vaidūryamayavedikān) - having platforms/altars made of lapis lazuli (cat's eye gem)

• नीलवैदूर्यवर्णाः (nīlavaidūryavarṇāḥ) - of blue lapis lazuli color

• च (ca) - and, also

• पद्मिनीः (padminīḥ) - lotus ponds, collections of lotuses

• पतगावृताः (patagāvṛtāḥ) - covered/filled with birds

Words meanings and morphology

तरुणादित्यसंकाशान् (taruṇādityasaṁkāśān) - resembling the rising sun

(adjective)

Accusative, feminine, plural of taruṇādityasaṃkāśa

taruṇādityasaṁkāśa - resembling the young sun, looking like the rising sun

Compound type : bahuvrīhi (taruṇa+āditya+saṃkāśa)

• taruṇa – young, fresh, rising
  adjective (masculine)
• āditya – sun; son of Aditi
  noun (masculine)
• saṃkāśa – resembling, similar to, appearing like
  adjective (masculine)
  Prefix: sam

वैदूर्यमयवेदिकान् (vaidūryamayavedikān) - having platforms/altars made of lapis lazuli (cat's eye gem)

(adjective)

Accusative, feminine, plural of vaidūryamayavedika

vaidūryamayavedika - having altars made of lapis lazuli

Compound type : bahuvrīhi (vaidūrya+maya+vedikā)

• vaidūrya – lapis lazuli, cat's eye gem, beryl
  noun (neuter)
• maya – made of, consisting of
  adjective (masculine)
  suffix denoting material
• vedikā – altar, raised platform, enclosure
  noun (feminine)

नीलवैदूर्यवर्णाः (nīlavaidūryavarṇāḥ) - of blue lapis lazuli color

(adjective)

Nominative, feminine, plural of nīlavaidūryavarṇa

nīlavaidūryavarṇa - having the color of blue lapis lazuli

Compound type : tatpuruṣa (nīla+vaidūrya+varṇa)

• nīla – blue, dark blue
  adjective (masculine)
• vaidūrya – lapis lazuli, cat's eye gem
  noun (neuter)
• varṇa – color, hue, form, appearance
  noun (masculine)

च (ca) - and, also

(indeclinable)

पद्मिनीः (padminīḥ) - lotus ponds, collections of lotuses

(noun)

Accusative, feminine, plural of padminī

padminī - a lotus plant, a lotus pond, a multitude of lotuses

पतगावृताः (patagāvṛtāḥ) - covered/filled with birds

(adjective)

Nominative, feminine, plural of patagāvṛta

patagāvṛta - covered with birds, frequented by birds

Compound type : tatpuruṣa (pataga+āvṛta)

• pataga – bird, flying creature
  noun (masculine)
  From root 'pat' (to fly) + 'ga' (going)
  Root: pat (class 1)
• āvṛta – covered, surrounded, enveloped
  adjective (masculine)
  Past Passive Participle
  From root 'vṛ' (to cover) with prefix 'ā'
  Prefix: ā
  Root: vṛ (class 5)