महाभारतः mahābhārataḥ - book-9, chapter-13, verse-20

द्रौणिस्तु समरे दृष्ट्वा पाण्डवस्य पराक्रमम् ।
रथेनातिपताकेन पाण्डवं प्रत्यवारयत् ॥२०॥

20. drauṇistu samare dṛṣṭvā pāṇḍavasya parākramam ,
rathenātipatākena pāṇḍavaṁ pratyavārayat.

20. drauṇiḥ tu samare dṛṣṭvā pāṇḍavasya parākramam
rathena atipatākena pāṇḍavam pratyavārayat

20. tu drauṇiḥ samare pāṇḍavasya parākramam dṛṣṭvā
atipatākena rathena pāṇḍavam pratyavārayat

20. But Droṇi's son (Aśvatthāmā), having witnessed the Pandava's (Arjuna's) valor in battle, then intercepted the Pandava with his conspicuously bannered chariot.

Words meanings summery:

• द्रौणिः (drauṇiḥ) - Aśvatthāmā (Drauni, son of Drona)

• तु (tu) - but, however, indeed

• समरे (samare) - in battle

• दृष्ट्वा (dṛṣṭvā) - having seen, having witnessed

• पाण्डवस्य (pāṇḍavasya) - of Arjuna (of the Pandava, of Arjuna)

• पराक्रमम् (parākramam) - prowess, valor, strength

• रथेन (rathena) - by/with the chariot

• अतिपताकेन (atipatākena) - with a very prominent banner

• पाण्डवम् (pāṇḍavam) - Arjuna (the Pandava, Arjuna)

• प्रत्यवारयत् (pratyavārayat) - he stopped, he checked, he intercepted

Words meanings and morphology

द्रौणिः (drauṇiḥ) - Aśvatthāmā (Drauni, son of Drona)

(proper noun)

Nominative, masculine, singular of drauṇi

drauṇi - son of Droṇa (Aśvatthāmā)

तु (tu) - but, however, indeed

(indeclinable)

समरे (samare) - in battle

(noun)

Locative, masculine, singular of samara

samara - battle, combat, war

दृष्ट्वा (dṛṣṭvā) - having seen, having witnessed

(indeclinable)

Absolutive (Gerund)

Formed from root 'dṛś' with suffix '-tvā'

Root: dṛś (class 1)

पाण्डवस्य (pāṇḍavasya) - of Arjuna (of the Pandava, of Arjuna)

(noun)

Genitive, masculine, singular of pāṇḍava

pāṇḍava - descendant of Pandu, son of Pandu

पराक्रमम् (parākramam) - prowess, valor, strength

(noun)

Accusative, masculine, singular of parākrama

parākrama - prowess, valor, courage, power

Prefix: parā

Root: kram (class 1)

रथेन (rathena) - by/with the chariot

(noun)

Instrumental, masculine, singular of ratha

ratha - chariot

अतिपताकेन (atipatākena) - with a very prominent banner

(adjective)

Instrumental, masculine, singular of atipatāka

atipatāka - having a prominent banner

Compound type : Bahuvrīhi (ati+patākā)

• ati – very, exceedingly, over, beyond
  prefix
• patākā – banner, flag
  noun (feminine)

पाण्डवम् (pāṇḍavam) - Arjuna (the Pandava, Arjuna)

(noun)

Accusative, masculine, singular of pāṇḍava

pāṇḍava - descendant of Pandu, son of Pandu

प्रत्यवारयत् (pratyavārayat) - he stopped, he checked, he intercepted

(verb)

3rd person , singular, active, imperfect past (laṅ) of vṛ

Root 'vṛ' with prefixes 'prati' and 'ava'

Prefixes: prati+ava

Root: vṛ (class 5)