महाभारतः mahābhārataḥ - book-7, chapter-108, verse-31

निर्दहन्तौ महाराज शरवृष्ट्या परस्परम् ।
अन्योन्यमभिवीक्षन्तौ कोपाद्विवृतलोचनौ ॥३१॥

31. nirdahantau mahārāja śaravṛṣṭyā parasparam ,
anyonyamabhivīkṣantau kopādvivṛtalocanau.

31. nirdahantau mahārāja śaravṛṣṭyā parasparam
anyonyam abhivīkṣantau kopāt vivṛtalocanau

31. mahārāja śaravṛṣṭyā parasparam nirdahantau
kopāt vivṛtalocanau anyonyam abhivīkṣantau

31. O great king, they mutually scorched each other with a rain of arrows. With eyes widened by rage, they kept observing one another.

Words meanings summery:

• निर्दहन्तौ (nirdahantau) - burning, scorching, consuming

• महाराज (mahārāja) - O great king

• शरवृष्ट्या (śaravṛṣṭyā) - with a shower of arrows, by a rain of arrows

• परस्परम् (parasparam) - mutually, each other, reciprocally

• अन्योन्यम् (anyonyam) - mutually, each other

• अभिवीक्षन्तौ (abhivīkṣantau) - looking at, observing intently

• कोपात् (kopāt) - from anger, due to rage

• विवृतलोचनौ (vivṛtalocanau) - with wide-open eyes

Words meanings and morphology

निर्दहन्तौ (nirdahantau) - burning, scorching, consuming

(adjective)

Nominative, masculine, dual of nirdahant

nirdahant - burning down, consuming, scorching

Present Active Participle

From root 'dah' (to burn) with 'nir' prefix. Participle suffix 'śatṛ'.

Prefix: nir

Root: dah (class 1)

महाराज (mahārāja) - O great king

(noun)

Vocative, masculine, singular of mahārāja

mahārāja - great king, emperor

Compound type : karmadhāraya (mahā+rājan)

• mahā – great, large, mighty
  adjective
• rājan – king, ruler
  noun (masculine)

शरवृष्ट्या (śaravṛṣṭyā) - with a shower of arrows, by a rain of arrows

(noun)

Instrumental, feminine, singular of śaravṛṣṭi

śaravṛṣṭi - shower of arrows, rain of arrows

Compound type : tatpuruṣa (śara+vṛṣṭi)

• śara – arrow, reed
  noun (masculine)
• vṛṣṭi – rain, shower, downpour
  noun (feminine)

परस्परम् (parasparam) - mutually, each other, reciprocally

(pronoun)

Accusative, neuter, singular of paraspara

paraspara - mutual, reciprocal

Note: Used adverbially to indicate mutual action with 'nirdahantau'.

अन्योन्यम् (anyonyam) - mutually, each other

(pronoun)

Accusative, neuter, singular of anyonya

anyonya - mutually, one another, each other

Note: Functions as an object of 'abhivīkṣantau'.

अभिवीक्षन्तौ (abhivīkṣantau) - looking at, observing intently

(adjective)

Nominative, masculine, dual of abhivīkṣant

abhivīkṣant - looking at, observing, gazing upon

Present Active Participle

From root 'īkṣ' (to see) with prefixes 'abhi' and 'vi'. Participle suffix 'śatṛ'.

Prefixes: abhi+vi

Root: īkṣ (class 1)

कोपात् (kopāt) - from anger, due to rage

(noun)

Ablative, masculine, singular of kopa

kopa - anger, wrath, rage

Root: kup (class 4)

विवृतलोचनौ (vivṛtalocanau) - with wide-open eyes

(adjective)

Nominative, masculine, dual of vivṛtalocana

vivṛtalocana - having wide-open eyes

Compound type : bahuvrihi (vivṛta+locana)

• vivṛta – wide open, revealed, uncovered
  adjective
  Past Passive Participle
  From root 'vṛ' (to cover, choose) with 'vi' prefix, here in sense of 'uncover, open'.
  Prefix: vi
  Root: vṛ (class 5)
• locana – eye
  noun (neuter)