महाभारतः mahābhārataḥ - book-9, chapter-8, verse-3

नागानां भीमरूपाणां द्रवतां निस्वनो महान् ।
अश्रूयत यथा काले जलदानां नभस्तले ॥३॥

3. nāgānāṁ bhīmarūpāṇāṁ dravatāṁ nisvano mahān ,
aśrūyata yathā kāle jaladānāṁ nabhastale.

3. nāgānām bhīmarūpāṇām dravatām niḥsvanaḥ mahān
aśrūyata yathā kāle jaladānām nabhastale

3. bhīmarūpāṇām dravatām nāgānām mahān niḥsvanaḥ
aśrūyata yathā kāle nabhastale jaladānām

3. A great roar from the dreadful-looking, stampeding elephants was heard, just as the sound of clouds is heard in the sky during the (rainy) season.

Words meanings summery:

• नागानाम् (nāgānām) - of elephants

• भीमरूपाणाम् (bhīmarūpāṇām) - of dreadful form, terrible-looking

• द्रवताम् (dravatām) - of those rushing, running, stampeding

• निःस्वनः (niḥsvanaḥ) - sound, roar, noise

• महान् (mahān) - great, mighty, loud

• अश्रूयत (aśrūyata) - it was heard

• यथा (yathā) - just as, as, like

• काले (kāle) - in season, at the proper time

• जलदानाम् (jaladānām) - of clouds

• नभस्तले (nabhastale) - in the sky, in the atmosphere

Words meanings and morphology

नागानाम् (nāgānām) - of elephants

(noun)

Genitive, masculine, plural of nāga

nāga - serpent, elephant, mountain

भीमरूपाणाम् (bhīmarūpāṇām) - of dreadful form, terrible-looking

(adjective)

Genitive, masculine, plural of bhīmarūpa

bhīmarūpa - having a dreadful form, terrible-looking

Compound type : bahuvrīhi (bhīma+rūpa)

• bhīma – dreadful, terrible, fierce
  adjective (masculine)
  from root bhī 'to fear'
  Root: bhī (class 3)
• rūpa – form, shape, appearance
  noun (neuter)

द्रवताम् (dravatām) - of those rushing, running, stampeding

(adjective)

Genitive, masculine, plural of dravat

dravat - running, rushing, flowing

Present Active Participle

from root dru 'to run, flow', present active participle, masculine plural genitive

Root: dru (class 1)

निःस्वनः (niḥsvanaḥ) - sound, roar, noise

(noun)

Nominative, masculine, singular of niḥsvana

niḥsvana - sound, noise, roar

from nis-svan (to sound forth)

Prefix: nis

Root: svan (class 1)

महान् (mahān) - great, mighty, loud

(adjective)

Nominative, masculine, singular of mahat

mahat - great, large, mighty, loud

अश्रूयत (aśrūyata) - it was heard

(verb)

3rd person , singular, passive, imperfect (laṅ) of śru

Imperfect Passive 3rd Singular

from root śru (to hear), imperfect tense, passive voice, 3rd person singular (a- augment)

Root: śru (class 5)

यथा (yathā) - just as, as, like

(indeclinable)

काले (kāle) - in season, at the proper time

(noun)

Locative, masculine, singular of kāla

kāla - time, season, proper time

जलदानाम् (jaladānām) - of clouds

(noun)

Genitive, masculine, plural of jalada

jalada - cloud (giver of water)

Compound type : tatpuruṣa (jala+da)

• jala – water
  noun (neuter)
• da – giving, giver
  adjective (masculine)
  suffix -da from root dā 'to give'
  Root: dā (class 1)

नभस्तले (nabhastale) - in the sky, in the atmosphere

(noun)

Locative, neuter, singular of nabhastala

nabhastala - sky, atmosphere, firmament

Compound type : tatpuruṣa (nabhas+tala)

• nabhas – sky, atmosphere, cloud
  noun (neuter)
• tala – surface, plane, level ground
  noun (neuter)