महाभारतः mahābhārataḥ - book-4, chapter-53, verse-54

विधुन्वानौ तु तौ वीरौ धनुषी भारसाधने ।
आच्छादयेतामन्योन्यं तितक्षन्तौ रणेषुभिः ॥५४॥

54. vidhunvānau tu tau vīrau dhanuṣī bhārasādhane ,
ācchādayetāmanyonyaṁ titakṣantau raṇeṣubhiḥ.

54. vidhunvānau tu tau vīrau dhanuṣī bhārasādhane
ācchādayetām anyonyam titikṣantau raṇeṣubhiḥ

54. Indeed, those two heroes, wielding their bows which were instruments of great tasks, covered each other with battle-arrows, both desirous of overcoming.

Words meanings summery:

• विधुन्वानौ (vidhunvānau) - shaking, brandishing, wielding (two persons)

• तु (tu) - but, indeed, yet

• तौ (tau) - those two

• वीरौ (vīrau) - the two heroes

• धनुषी (dhanuṣī) - two bows

• भारसाधने (bhārasādhane) - instruments accomplishing great tasks/burdens

• आच्छादयेताम् (ācchādayetām) - they (two) covered

• अन्योन्यम् (anyonyam) - each other, mutually

• तितिक्षन्तौ (titikṣantau) - desirous of overcoming, enduring (two persons)

• रणेषुभिः (raṇeṣubhiḥ) - with battle-arrows

Words meanings and morphology

विधुन्वानौ (vidhunvānau) - shaking, brandishing, wielding (two persons)

(adjective)

Nominative, masculine, dual of vidhunvāna

vidhunvāna - shaking, wielding, trembling

Present Middle Participle

From root dhū (to shake) with upasarga vi.

Prefix: vi

Root: dhū (class 5)

तु (tu) - but, indeed, yet

(indeclinable)

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

Demonstrative pronoun.

Note: Refers to Droṇa and Arjuna.

वीरौ (vīrau) - the two heroes

(noun)

Nominative, masculine, dual of vīra

vīra - hero, brave, valiant

Note: In apposition to 'tau'.

धनुषी (dhanuṣī) - two bows

(noun)

Accusative, neuter, dual of dhanus

dhanus - bow, arc

Note: Object of 'vidhunvānau'.

भारसाधने (bhārasādhane) - instruments accomplishing great tasks/burdens

(adjective)

Accusative, neuter, dual of bhārasādhana

bhārasādhana - accomplishing/bearing a great burden/task

Compound type : tatpurusha (bhāra+sādhana)

• bhāra – burden, load, task, weighty matter
  noun (masculine)
  Root: bhṛ (class 1)
• sādhana – means, instrument, accomplishment, effecting
  noun (neuter)
  Agent/Instrument noun
  From root sādh (to accomplish).
  Root: sādh (class 5)

Note: Describes 'dhanuṣī'.

आच्छादयेताम् (ācchādayetām) - they (two) covered

(verb)

3rd person , dual, middle, past imperfect (laṅ) of ācchād

Imperfect (laṅ) third person dual of the causal form of root chad (to cover) with upasarga ā.

Prefix: ā

Root: chad (class 10)

अन्योन्यम् (anyonyam) - each other, mutually

(pronoun)

Accusative, neuter, singular of anyonya

anyonya - each other, mutual, reciprocal

Reduplicated anya.

Note: Direct object of 'ācchādayetām'.

तितिक्षन्तौ (titikṣantau) - desirous of overcoming, enduring (two persons)

(adjective)

Nominative, masculine, dual of titikṣant

titikṣant - enduring, patient, desirous of victory/overcoming

Present Active Participle (Desiderative)

Desiderative of root tij (to sharpen, to endure). Root tikṣ + san suffix + at participle suffix.

Root: tij (class 1)

Note: Describes the two heroes.

रणेषुभिः (raṇeṣubhiḥ) - with battle-arrows

(noun)

Instrumental, masculine, plural of raṇeṣu

raṇeṣu - battle-arrow, war-arrow

Compound type : tatpurusha (raṇa+iṣu)

• raṇa – battle, fight, war, conflict
  noun (masculine)
  Root: raṇ (class 1)
• iṣu – arrow
  noun (masculine)
  Root: iṣ (class 6)

Note: Means by which they covered each other.