वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-32, verse-55

अर्जुनस्य गदा सा तु पात्यमानाहितोरसि ।
काञ्चनाभं नभश्चक्रे विद्युत्सौदामनी यथा ॥५५॥

55. arjunasya gadā sā tu pātyamānāhitorasi ,
kāñcanābhaṃ nabhaścakre vidyutsaudāmanī yathā.

55. arjunasya gadā sā tu pātyamānāhitōrasi
kāñcanābham nabhaḥ cakre vidyut saudāmanī yathā

55. tu sā arjunasya gadā pātyamānāhitōrasi
kāñcanābham nabhaḥ cakre yathā vidyut saudāmanī

55. But that mace of Arjuna, as it struck the enemy's chest, made the sky appear golden, just like a flash of cloud-born lightning.

Words meanings summery:

• अर्जुनस्य (arjunasya) - of Arjuna

• गदा (gadā) - mace, club

• सा (sā) - that (feminine)

• तु (tu) - but, and, indeed

• पात्यमानाहित्ओरसि (pātyamānāhitōrasi) - as the mace was striking the enemy's chest (falling on the enemy's chest, being made to fall on the enemy's chest)

• काञ्चनाभम् (kāñcanābham) - golden-hued, golden-shining

• नभः (nabhaḥ) - sky, atmosphere, firmament

• चक्रे (cakre) - it made, it created, it did

• विद्युत् (vidyut) - lightning, flash of lightning

• सौदामनी (saudāmanī) - cloud-born lightning (cloud-born, relating to a rain-cloud; a type of lightning)

• यथा (yathā) - just as, as

Words meanings and morphology

अर्जुनस्य (arjunasya) - of Arjuna

(proper noun)

Genitive, masculine, singular of arjuna

arjuna - Arjuna (a Pandava prince), white, silvery

गदा (gadā) - mace, club

(noun)

Nominative, feminine, singular of gadā

gadā - mace, club

सा (sā) - that (feminine)

(pronoun)

Nominative, feminine, singular of tad

tad - that, those

तु (tu) - but, and, indeed

(indeclinable)

पात्यमानाहित्ओरसि (pātyamānāhitōrasi) - as the mace was striking the enemy's chest (falling on the enemy's chest, being made to fall on the enemy's chest)

(adjective)

Nominative, feminine, singular of pātyamānāhitōras

pātyamānāhitōras - being made to fall on the enemy's chest

Compound acting as adjective, combining a present passive participle and a locative noun phrase.

Compound type : complex descriptive compound (pātyamāna+ahita+uras)

• pātyamāna – being caused to fall, being struck
  verbal derivative
  Present Passive Participle
  Causative of √pat (to fall) + śānac suffix
  Root: pat (class 1)
• ahita – enemy, foe, harmful
  noun (masculine)
  na-tatpuruṣa of hita
• uras – chest, breast, heart
  noun (neuter)

काञ्चनाभम् (kāñcanābham) - golden-hued, golden-shining

(adjective)

Accusative, neuter, singular of kāñcanābha

kāñcanābha - golden-hued, having the lustre of gold

Compound type : tatpuruṣa (kāñcana+ābha)

• kāñcana – golden, made of gold, gold
  adjective
• ābha – lustre, resemblance, appearance
  noun
  From √ābhā (to shine)
  Prefix: ā
  Root: bhā (class 2)

नभः (nabhaḥ) - sky, atmosphere, firmament

(noun)

Accusative, neuter, singular of nabhas

nabhas - sky, atmosphere, cloud

चक्रे (cakre) - it made, it created, it did

(verb)

3rd person , singular, middle, perfect (Lit) of kṛ

Root: kṛ (class 8)

विद्युत् (vidyut) - lightning, flash of lightning

(noun)

Nominative, feminine, singular of vidyut

vidyut - lightning, flash of light

सौदामनी (saudāmanī) - cloud-born lightning (cloud-born, relating to a rain-cloud; a type of lightning)

(adjective)

Nominative, feminine, singular of saudāmanī

saudāmanī - lightning (specifically from a rain-cloud), cloud-born

From sudāman (a cloud) + ī (feminine suffix)

यथा (yathā) - just as, as

(indeclinable)