वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-19, verse-22

रक्षांसि परिनिघ्नन्तः पुर्यामस्यां समन्ततः ।
असंपातं करिष्यन्ति पतन्तः कङ्कवाससः ॥२२॥

22. rakṣāṃsi parinighnantaḥ puryāmasyāṃ samantataḥ ,
asaṃpātaṃ kariṣyanti patantaḥ kaṅkavāsasaḥ.

22. rakṣāṃsi parinighnantaḥ puryām asyām samantataḥ
asaṃpātam kariṣyanti patantaḥ kaṅkavāsasaḥ

22. Those (warriors) descending, appearing like vultures (kaṅkavāsasaḥ), will strike down the demons (rakṣāṃsi) all around in this city, leaving no refuge (asaṃpātam) for them.

Words meanings summery:

• रक्षांसि (rakṣāṁsi) - demons, rākṣasas

• परिनिघ्नन्तः (parinighnantaḥ) - striking down, killing, destroying all around

• पुर्याम् (puryām) - in the city

• अस्याम् (asyām) - in this

• समन्ततः (samantataḥ) - all around, everywhere

• असंपातम् (asaṁpātam) - Leaving no place for the demons to gather or find refuge. (without conflict, without obstacles, without refuge, without a gathering place)

• करिष्यन्ति (kariṣyanti) - They will make the city without refuge for demons. (they will do, they will make)

• पतन्तः (patantaḥ) - Refers to the warriors rapidly descending upon Lanka. (falling, descending, swooping down)

• कङ्कवाससः (kaṅkavāsasaḥ) - Referring to fierce warriors or divine beings characterized by their swift, predatory nature or symbolic attire. (clad in vulture-like attire, having vultures as signs, swift as vultures)

Words meanings and morphology

रक्षांसि (rakṣāṁsi) - demons, rākṣasas

(noun)

Accusative, neuter, plural of rakṣas

rakṣas - demon, rākṣasa, a harmful being

Root: rakṣ (class 1)

Note: Also nominative plural. Here accusative as object of parinighnantaḥ.

परिनिघ्नन्तः (parinighnantaḥ) - striking down, killing, destroying all around

(participle)

Nominative, masculine, plural of parinighnant

parinighnant - striking down completely, annihilating

present active participle

Derived from root han (to strike, kill) with upasargas pari and ni.

Prefixes: pari+ni

Root: han (class 2)

Note: Refers to the agents who will strike down the demons.

पुर्याम् (puryām) - in the city

(noun)

Locative, feminine, singular of purī

purī - city, town, fortress

Note: Refers to the city of Lanka.

अस्याम् (asyām) - in this

(pronoun)

Locative, feminine, singular of idam

idam - this, this one

Demonstrative pronoun.

Note: Adjective modifying puryām.

समन्ततः (samantataḥ) - all around, everywhere

(indeclinable)

Adverbial derivative from samanta.

असंपातम् (asaṁpātam) - Leaving no place for the demons to gather or find refuge. (without conflict, without obstacles, without refuge, without a gathering place)

(noun)

Accusative, masculine, singular of asaṃpāta

asaṁpāta - absence of falling, unimpeded course, freedom from obstacle, without failure, without refuge

Compound of 'a' (negation) and 'saṃpāta' (falling, alighting, confluence, encounter, refuge).

Compound type : Nañ-tatpuruṣa (a+saṃpāta)

• a – not, un-, without
  indeclinable
  Negation prefix
• saṃpāta – falling, alighting, encounter, confluence, refuge, gathering
  noun (masculine)
  From root pat (to fall) with prefix sam.
  Prefix: sam
  Root: pat (class 1)

Note: Functions adverbially here as an outcome or state.

करिष्यन्ति (kariṣyanti) - They will make the city without refuge for demons. (they will do, they will make)

(verb)

3rd person , plural, active, future (lṛṭ) of kṛ

Future tense, 3rd person plural

From root kṛ.

Root: kṛ (class 8)

पतन्तः (patantaḥ) - Refers to the warriors rapidly descending upon Lanka. (falling, descending, swooping down)

(participle)

Nominative, masculine, plural of patant

patant - falling, descending, flying

present active participle

From root pat (to fall, fly).

Root: pat (class 1)

Note: Modifies the subjects of parinighnantaḥ and kariṣyanti.

कङ्कवाससः (kaṅkavāsasaḥ) - Referring to fierce warriors or divine beings characterized by their swift, predatory nature or symbolic attire. (clad in vulture-like attire, having vultures as signs, swift as vultures)

(adjective)

Nominative, masculine, plural of kaṅkavāsas

kaṅkavāsas - having vulture-like garments, or swift as vultures

Bahuvrīhi compound.

Compound type : Bahuvrīhi (kaṅka+vāsas)

• kaṅka – a kind of heron, vulture, predatory bird
  noun (masculine)
• vāsas – garment, clothing, dwelling, feather
  noun (neuter)

Note: Modifies the implied subject of 'kariṣyanti' and 'parinighnantaḥ'.