महाभारतः mahābhārataḥ - book-13, chapter-50, verse-7

गङ्गायमुनयोर्वेगं सुभीमं भीमनिःस्वनम् ।
प्रतिजग्राह शिरसा वातवेगसमं जवे ॥७॥

7. gaṅgāyamunayorvegaṁ subhīmaṁ bhīmaniḥsvanam ,
pratijagrāha śirasā vātavegasamaṁ jave.

7. gaṅgāyamunayoḥ vegam subhīmam bhīmanihsvanam
pratijagrāha śirasā vātavegasamam jave

7. śirasā gaṅgāyamunayoḥ vegam subhīmam
bhīmanihsvanam jave vātavegasamam pratijagrāha

7. He withstood with his head the tremendously formidable and terribly roaring current of the Ganga and Yamuna, a current that was equal in speed to the wind.

Words meanings summery:

• गङ्गायमुनयोः (gaṅgāyamunayoḥ) - of the Ganga and Yamuna

• वेगम् (vegam) - speed, current, force

• सुभीमम् (subhīmam) - very formidable, very terrible, extremely dreadful

• भीमनिह्स्वनम् (bhīmanihsvanam) - having a terrible roar, with a dreadful sound

• प्रतिजग्राह (pratijagrāha) - he held back, he received, he withstood

• शिरसा (śirasā) - by the head, with the head

• वातवेगसमम् (vātavegasamam) - equal to the speed of wind

• जवे (jave) - in speed, in swiftness

Words meanings and morphology

गङ्गायमुनयोः (gaṅgāyamunayoḥ) - of the Ganga and Yamuna

(noun)

Genitive, feminine, dual of gaṅgāyamunā

gaṅgāyamunā - The rivers Ganga and Yamuna

Compound type : dvandva (gaṅgā+yamunā)

• gaṅgā – The river Ganga
  proper noun (feminine)
• yamunā – The river Yamuna
  proper noun (feminine)

वेगम् (vegam) - speed, current, force

(noun)

Accusative, masculine, singular of vega

vega - speed, current, force, impetus

सुभीमम् (subhīmam) - very formidable, very terrible, extremely dreadful

(adjective)

Accusative, masculine, singular of subhīma

subhīma - very dreadful, extremely formidable

Compound type : pravādi tatpuruṣa (su+bhīma)

• su – good, well, very
  indeclinable
• bhīma – terrible, dreadful
  adjective (masculine)

भीमनिह्स्वनम् (bhīmanihsvanam) - having a terrible roar, with a dreadful sound

(adjective)

Accusative, masculine, singular of bhīmanihsvana

bhīmanihsvana - having a dreadful roar/sound

Compound type : bahuvrīhi (bhīma+nihsvana)

• bhīma – terrible, dreadful
  adjective (masculine)
• nihsvana – sound, roar
  noun (masculine)
  Prefix: nir
  Root: svan (class 1)

प्रतिजग्राह (pratijagrāha) - he held back, he received, he withstood

(verb)

3rd person , singular, active, perfect (lit) of pratijagrāha

Prefix: prati

Root: grah (class 9)

शिरसा (śirasā) - by the head, with the head

(noun)

Instrumental, neuter, singular of śiras

śiras - head

वातवेगसमम् (vātavegasamam) - equal to the speed of wind

(adjective)

Accusative, masculine, singular of vātavegasama

vātavegasama - equal to the speed of wind

Compound type : ṣaṣṭhī tatpuruṣa (vāta+vega+sama)

• vāta – wind
  noun (masculine)
  Root: vā (class 2)
• vega – speed, current, force
  noun (masculine)
  Root: vij (class 1)
• sama – equal, similar, same
  adjective (masculine)

जवे (jave) - in speed, in swiftness

(noun)

Locative, masculine, singular of java

java - speed, swiftness, impetus