वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-3, verse-4

सुपुष्टबलसंगुप्तां यथैव विटपावतीम् ।
चारुतोरणनिर्यूहां पाण्डुरद्वारतोरणाम् ॥४॥

4. supuṣṭabalasaṃguptāṃ yathaiva viṭapāvatīm ,
cārutoraṇaniryūhāṃ pāṇḍuradvāratoraṇām.

4. supuṣṭabalasaṃguptām yathā eva viṭapāvatīm
cārutoraṇaniryūhām pāṇḍuradvāratoraṇām

4. (The city was) well-protected by mighty forces, just like (Kubera's city) Viṭapāvatī, adorned with beautiful archways and high gates, and having white gateways and ornamental arches.

Words meanings summery:

• सुपुष्टबलसंगुप्ताम् (supuṣṭabalasaṁguptām) - the city well-protected by mighty forces (well-protected by strong forces)

• यथा (yathā) - just as, like

• एव (eva) - indeed, certainly (emphatic particle)

• विटपावतीम् (viṭapāvatīm) - to Viṭapāvatī, the city of Kubera (to Viṭapāvatī)

• चारुतोरणनिर्यूहाम् (cārutoraṇaniryūhām) - the city having beautiful archways and high gates (having beautiful archways and high gates)

• पाण्डुरद्वारतोरणाम् (pāṇḍuradvāratoraṇām) - the city having white gateways and ornamental arches (having white gateways and arches)

Words meanings and morphology

सुपुष्टबलसंगुप्ताम् (supuṣṭabalasaṁguptām) - the city well-protected by mighty forces (well-protected by strong forces)

(adjective)

Accusative, feminine, singular of supuṣṭabalasaṃgupta

supuṣṭabalasaṁgupta - well-protected by strong forces

Past Passive Participle

Derived from √gupt (to guard) with prefix sam + kta suffix, preceded by supuṣṭabala.

Compound type : tṛtīyā tatpuruṣa (supuṣṭabala+saṃgupta)

• supuṣṭabala – well-nourished/strong forces
  noun (neuter)
• saṃgupta – well-protected, thoroughly guarded
  adjective
  Past Passive Participle
  Derived from √gupt (to guard, conceal) with prefix sam + kta suffix.
  Prefix: sam
  Root: gupt (class 10)

यथा (yathā) - just as, like

(indeclinable)

एव (eva) - indeed, certainly (emphatic particle)

(indeclinable)

विटपावतीम् (viṭapāvatīm) - to Viṭapāvatī, the city of Kubera (to Viṭapāvatī)

(proper noun)

Accusative, feminine, singular of viṭapāvatī

viṭapāvatī - Viṭapāvatī (name of Kubera's city)

चारुतोरणनिर्यूहाम् (cārutoraṇaniryūhām) - the city having beautiful archways and high gates (having beautiful archways and high gates)

(adjective)

Accusative, feminine, singular of cārutoraṇaniryūha

cārutoraṇaniryūha - having beautiful archways and high gates/turrets

Compound type : bahuvrīhi (cāru+toraṇa+niryūha)

• cāru – beautiful, charming, lovely
  adjective
• toraṇa – archway, ornamental gateway
  noun (neuter)
• niryūha – projection, turret, pinnacle, high gate
  noun (masculine)
  Prefix: nir
  Root: ūh (class 1)

पाण्डुरद्वारतोरणाम् (pāṇḍuradvāratoraṇām) - the city having white gateways and ornamental arches (having white gateways and arches)

(adjective)

Accusative, feminine, singular of pāṇḍuradvāratoraṇa

pāṇḍuradvāratoraṇa - having white gateways and arches

Compound type : bahuvrīhi (pāṇḍura+dvāra+toraṇa)

• pāṇḍura – white, pale, yellowish-white
  adjective
• dvāra – door, gate, entrance
  noun (neuter)
  Root: dvṛ
• toraṇa – archway, ornamental gateway
  noun (neuter)