महाभारतः mahābhārataḥ - book-6, chapter-83, verse-38

पाण्डवानां रथाश्चापि नदन्तो भैरवस्वनम् ।
अभ्यद्रवन्त संयत्ता धृष्टद्युम्नपुरोगमाः ॥३८॥

38. pāṇḍavānāṁ rathāścāpi nadanto bhairavasvanam ,
abhyadravanta saṁyattā dhṛṣṭadyumnapurogamāḥ.

38. pāṇḍavānām rathāḥ ca api nadantaḥ bhairavasvanam
abhyadravanta saṃyattāḥ dhṛṣṭadyumnapurōgamāḥ

38. pāṇḍavānām rathāḥ ca api dhṛṣṭadyumnapurōgamāḥ
saṃyattāḥ bhairavasvanam nadantaḥ abhyadravanta

38. And the chariots of the Pāṇḍavas, making a terrible roar, also rushed forward, well-prepared, with Dhṛṣṭadyumna leading them.

Words meanings summery:

• पाण्डवानाम् (pāṇḍavānām) - of the Pandavas

• रथाः (rathāḥ) - chariots

• च (ca) - and, also

• अपि (api) - also, even, indeed

• नदन्तः (nadantaḥ) - roaring, making a sound

• भैरवस्वनम् (bhairavasvanam) - a terrible sound, a frightful roar

• अभ्यद्रवन्त (abhyadravanta) - rushed towards, attacked

• संयत्ताः (saṁyattāḥ) - well-prepared, ready for battle, equipped

• धृष्टद्युम्नपुर्ओगमाः (dhṛṣṭadyumnapurōgamāḥ) - with Dhrishtadyumna as their leader

Words meanings and morphology

पाण्डवानाम् (pāṇḍavānām) - of the Pandavas

(noun)

Genitive, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, son of Pāṇḍu

रथाः (rathāḥ) - chariots

(noun)

Nominative, masculine, plural of ratha

ratha - chariot, car, vehicle

च (ca) - and, also

(indeclinable)

अपि (api) - also, even, indeed

(indeclinable)

नदन्तः (nadantaḥ) - roaring, making a sound

(participle)

Nominative, masculine, plural of nadat

nadat - roaring, sounding, making a noise

Present Active Participle

Derived from root nad (to sound, roar)

Root: nad (class 1)

भैरवस्वनम् (bhairavasvanam) - a terrible sound, a frightful roar

(noun)

Accusative, masculine, singular of bhairavasvana

bhairavasvana - a terrible sound, a frightful roar

Compound type : tatpurusha (bhairava+svana)

• bhairava – terrible, frightful, formidable; a name of Shiva
  adjective (masculine)
• svana – sound, noise, roar
  noun (masculine)

Note: Used adverbially to describe the manner of roaring.

अभ्यद्रवन्त (abhyadravanta) - rushed towards, attacked

(verb)

3rd person , plural, active, imperfect (laṅ) of abhyādru

Prefixes: abhi+ā

Root: dru (class 1)

संयत्ताः (saṁyattāḥ) - well-prepared, ready for battle, equipped

(adjective)

Nominative, masculine, plural of saṃyatta

saṁyatta - prepared, equipped, ready, restrained

Past Passive Participle

Derived from root yam with prefix sam

Prefix: sam

Root: yam (class 1)

धृष्टद्युम्नपुर्ओगमाः (dhṛṣṭadyumnapurōgamāḥ) - with Dhrishtadyumna as their leader

(adjective)

Nominative, masculine, plural of dhṛṣṭadyumnapurōgama

dhṛṣṭadyumnapurōgama - having Dhṛṣṭadyumna at the front, led by Dhṛṣṭadyumna

Compound type : bahuvrihi (dhṛṣṭadyumna+purogama)

• dhṛṣṭadyumna – Dhṛṣṭadyumna (proper name, son of Drupada, commander of the Pāṇḍava army)
  proper noun (masculine)
• purogama – going before, leading, chief, foremost
  adjective (masculine)
  Derived from puras (before) and root gam (to go)
  Prefix: puras
  Root: gam (class 1)