महाभारतः mahābhārataḥ - book-8, chapter-21, verse-31

अथ कर्णास्त्रमस्त्रेण प्रतिहत्यार्जुनः स्वयम् ।
दिशः खं चैव भूमिं च प्रावृणोच्छरवृष्टिभिः ॥३१॥

31. atha karṇāstramastreṇa pratihatyārjunaḥ svayam ,
diśaḥ khaṁ caiva bhūmiṁ ca prāvṛṇoccharavṛṣṭibhiḥ.

31. atha karṇāstram astreṇa pratihatya arjunaḥ svayam
diśaḥ kham ca eva bhūmim ca prāvṛṇot śaravṛṣṭibhiḥ

31. atha arjunaḥ svayam astreṇa karṇāstram pratihatya
diśaḥ kham ca eva bhūmim ca śaravṛṣṭibhiḥ prāvṛṇot

31. Then Arjuna himself, having countered Karṇa's missile (astra) with his own missile (astra), covered the directions, the sky, and the earth with volleys of arrows.

Words meanings summery:

• अथ (atha) - then, thereupon, now

• कर्णास्त्रम् (karṇāstram) - Karṇa's missile

• अस्त्रेण (astreṇa) - by a missile, with a weapon

• प्रतिहत्य (pratihatya) - having countered, having repelled, having struck back

• अर्जुनः (arjunaḥ) - Arjuna

• स्वयम् (svayam) - himself, personally, spontaneously

• दिशः (diśaḥ) - the directions, quarters of the sky

• खम् (kham) - the sky, space, ether

• च (ca) - and, also

• एव (eva) - even, indeed, just, only

• भूमिम् (bhūmim) - the earth, ground, land

• च (ca) - and, also

• प्रावृणोत् (prāvṛṇot) - covered, enveloped, concealed

• शरवृष्टिभिः (śaravṛṣṭibhiḥ) - with showers of arrows, with volleys of arrows

Words meanings and morphology

अथ (atha) - then, thereupon, now

(indeclinable)

कर्णास्त्रम् (karṇāstram) - Karṇa's missile

(noun)

Accusative, neuter, singular of karṇāstra

karṇāstra - Karṇa's missile or weapon

Compound type : tatpuruṣa (karṇa+astra)

• karṇa – Karṇa (a warrior's name)
  proper noun (masculine)
• astra – missile, weapon
  noun (neuter)

अस्त्रेण (astreṇa) - by a missile, with a weapon

(noun)

Instrumental, neuter, singular of astra

astra - missile, weapon

प्रतिहत्य (pratihatya) - having countered, having repelled, having struck back

(indeclinable)

Absolutive (gerund)

Derived from root √han (to strike, kill) with prefix prati (against, back) and suffix -tya.

Prefix: prati

Root: √han (class 2)

अर्जुनः (arjunaḥ) - Arjuna

(proper noun)

Nominative, masculine, singular of arjuna

arjuna - Arjuna (name of a Pāṇḍava prince); white, silver-colored

स्वयम् (svayam) - himself, personally, spontaneously

(indeclinable)

दिशः (diśaḥ) - the directions, quarters of the sky

(noun)

Accusative, feminine, plural of diś

diś - direction, quarter, region

खम् (kham) - the sky, space, ether

(noun)

Accusative, neuter, singular of kha

kha - space, ether, sky, air

च (ca) - and, also

(indeclinable)

एव (eva) - even, indeed, just, only

(indeclinable)

भूमिम् (bhūmim) - the earth, ground, land

(noun)

Accusative, feminine, singular of bhūmi

bhūmi - earth, ground, land, soil

च (ca) - and, also

(indeclinable)

प्रावृणोत् (prāvṛṇot) - covered, enveloped, concealed

(verb)

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

Prefix: pra

Root: √vṛ (class 5)

शरवृष्टिभिः (śaravṛṣṭibhiḥ) - with showers of arrows, with volleys of arrows

(noun)

Instrumental, feminine, plural of śaravṛṣṭi

śaravṛṣṭi - shower of arrows, volley of arrows

Compound type : tatpuruṣa (śara+vṛṣṭi)

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