वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-1, verse-80

त्वमिहासुरसंघानां पातालतलवासिनाम् ।
देवराज्ञा गिरिश्रेष्ठ परिघः संनिवेशितः ॥८०॥

80. tvamihāsurasaṃghānāṃ pātālatalavāsinām ,
devarājñā giriśreṣṭha parighaḥ saṃniveśitaḥ.

80. tvam iha asurasaṃghānām pātālatalavāsinām
devarājñā giriśreṣṭha parighaḥ saṃniveśitaḥ

80. giriśreṣṭha tvam iha devarājñā pātālatalavāsinām
asurasaṃghānām parighaḥ saṃniveśitaḥ

80. O best of mountains (girisreṣṭha)! You have been placed here by the king of gods as a barricade for the hosts of asuras dwelling in the netherworld (pātāla).

Words meanings summery:

• त्वम् (tvam) - you (singular) (you)

• इह (iha) - here (here, in this world, in this place)

• असुरसंघानाम् (asurasaṁghānām) - for the hosts of asuras (of the hosts of asuras, of the groups of demons)

• पातालतलवासिनाम् (pātālatalavāsinām) - of those dwelling in the depths of the netherworld (pātāla) (of those dwelling in the netherworld (pātāla))

• देवराज्ञा (devarājñā) - by the king of gods (Indra) (by the king of gods)

• गिरिश्रेष्ठ (giriśreṣṭha) - O best of mountains (vocative, addressing Maināka) (O best of mountains)

• परिघः (parighaḥ) - a barricade (barricade, bolt, iron bar)

• संनिवेशितः (saṁniveśitaḥ) - has been placed (placed, fixed, established)

Words meanings and morphology

त्वम् (tvam) - you (singular) (you)

(pronoun)

Nominative, singular of tvam

yuṣmad - you

इह (iha) - here (here, in this world, in this place)

(indeclinable)

असुरसंघानाम् (asurasaṁghānām) - for the hosts of asuras (of the hosts of asuras, of the groups of demons)

(noun)

Genitive, masculine, plural of asurasaṃgha

asurasaṁgha - host of asuras, group of demons

Compound type : tatpurusha (asura+saṃgha)

• asura – demon, anti-god, mighty one
  noun (masculine)
• saṃgha – host, multitude, group, assembly
  noun (masculine)
  Prefix: sam
  Root: han (class 2)

पातालतलवासिनाम् (pātālatalavāsinām) - of those dwelling in the depths of the netherworld (pātāla) (of those dwelling in the netherworld (pātāla))

(noun)

Genitive, masculine, plural of pātālatalavāsin

pātālatalavāsin - dweller in the netherworld

Compound type : tatpurusha (pātālatala+vāsin)

• pātālatala – the surface/depths of the netherworld (pātāla)
  noun (masculine)
• vāsin – dweller, inhabitant
  adjective (masculine)
  Derived from root vas (to dwell)
  Root: vas (class 1)

Note: Agrees with 'asurasaṃghānām'

देवराज्ञा (devarājñā) - by the king of gods (Indra) (by the king of gods)

(noun)

Instrumental, masculine, singular of devarājan

devarājan - king of gods, Indra

Compound type : tatpurusha (deva+rājan)

• deva – god, deity
  noun (masculine)
• rājan – king, ruler
  noun (masculine)

गिरिश्रेष्ठ (giriśreṣṭha) - O best of mountains (vocative, addressing Maināka) (O best of mountains)

(noun)

Vocative, masculine, singular of giriśreṣṭha

giriśreṣṭha - best of mountains

Compound type : tatpurusha (giri+śreṣṭha)

• giri – mountain, hill
  noun (masculine)
• śreṣṭha – best, excellent, most eminent
  adjective (masculine)
  Superlative of praśasya (excellent)

परिघः (parighaḥ) - a barricade (barricade, bolt, iron bar)

(noun)

Nominative, masculine, singular of parigha

parigha - barricade, bolt, obstacle, club

Prefix: pari

Root: han (class 2)

संनिवेशितः (saṁniveśitaḥ) - has been placed (placed, fixed, established)

(adjective)

Nominative, masculine, singular of saṃniveśita

saṁniveśita - placed, fixed, established, settled

Past Passive Participle

From root viś (to enter) with upasargas sam and ni, causative stem then P.P.P.

Prefixes: sam+ni

Root: viś (class 6)

Note: Agrees with 'tvam' (implied subject, 'you have been placed')