महाभारतः mahābhārataḥ - book-7, chapter-129, verse-21

रात्रौ वंशवनस्येव दह्यमानस्य पर्वते ।
घोरश्चटचटाशब्दः शस्त्राणां पततामभूत् ॥२१॥

21. rātrau vaṁśavanasyeva dahyamānasya parvate ,
ghoraścaṭacaṭāśabdaḥ śastrāṇāṁ patatāmabhūt.

21. rātrau vaṃśavanasya iva dahyamānasya parvate
ghoraḥ caṭacaṭāśabdaḥ śastrāṇām patatām abhūt

21. rātrau parvate dahyamānasya vaṃśavanasya iva
patatām śastrāṇām ghoraḥ caṭacaṭāśabdaḥ abhūt

21. At night, on the mountain, there was a terrible crackling sound of falling weapons, like that of a burning bamboo forest.

Words meanings summery:

• रात्रौ (rātrau) - at night, in the night

• वंशवनस्य (vaṁśavanasya) - of a bamboo forest

• इव (iva) - as if, like, similar to

• दह्यमानस्य (dahyamānasya) - of being burned, of burning

• पर्वते (parvate) - on the mountain

• घोरः (ghoraḥ) - terrible, dreadful, fierce

• चटचटाशब्दः (caṭacaṭāśabdaḥ) - crackling sound, rustling sound

• शस्त्राणाम् (śastrāṇām) - of weapons

• पतताम् (patatām) - of falling weapons (of falling ones, of those falling)

• अभूत् (abhūt) - there was, it occurred, it became

Words meanings and morphology

रात्रौ (rātrau) - at night, in the night

(noun)

Locative, feminine, singular of rātri

rātri - night

वंशवनस्य (vaṁśavanasya) - of a bamboo forest

(noun)

Genitive, neuter, singular of vaṃśavana

vaṁśavana - bamboo forest

Compound type : tatpuruṣa (vaṃśa+vana)

• vaṃśa – bamboo, lineage, race
  noun (masculine)
• vana – forest, wood, grove
  noun (neuter)

इव (iva) - as if, like, similar to

(indeclinable)

दह्यमानस्य (dahyamānasya) - of being burned, of burning

(participle)

Genitive, neuter, singular of dahyamāna

dahyamāna - burning, being burned

Present Middle Passive Participle

From root dah (to burn) with passive ya and śānac suffix (-māna).

Root: dah (class 1)

Note: Agrees with vaṃśavanasya.

पर्वते (parvate) - on the mountain

(noun)

Locative, masculine, singular of parvata

parvata - mountain, hill

घोरः (ghoraḥ) - terrible, dreadful, fierce

(adjective)

Nominative, masculine, singular of ghora

ghora - terrible, dreadful, fierce, frightful

Note: Agrees with caṭacaṭāśabdaḥ.

चटचटाशब्दः (caṭacaṭāśabdaḥ) - crackling sound, rustling sound

(noun)

Nominative, masculine, singular of caṭacaṭāśabda

caṭacaṭāśabda - crackling sound, rustling sound, a loud noise

Compound type : tatpuruṣa (caṭacaṭā+śabda)

• caṭacaṭā – crackling (onomatopoeic)
  indeclinable
  Reduplicated onomatopoeic form.
• śabda – sound, noise, word
  noun (masculine)

Note: Subject of abhūt.

शस्त्राणाम् (śastrāṇām) - of weapons

(noun)

Genitive, neuter, plural of śastra

śastra - weapon, sword, instrument

From root śas (to cut).

Root: śas

Note: Relates to patatām.

पतताम् (patatām) - of falling weapons (of falling ones, of those falling)

(participle)

Genitive, neuter, plural of patat

patat - falling, flying

Present Active Participle

From root pat (to fall, fly) with śatṛ suffix.

Root: pat (class 1)

Note: Agrees with śastrāṇām.

अभूत् (abhūt) - there was, it occurred, it became

(verb)

3rd person , singular, active, past (luṅ) of bhū

Aorist (Luṅ)

3rd person singular Aorist active.

Root: bhū (class 1)

Note: Subject is caṭacaṭāśabdaḥ.