महाभारतः mahābhārataḥ - book-7, chapter-18, verse-11

अथास्त्रमरिसंघघ्नं त्वाष्ट्रमभ्यस्यदर्जुनः ।
ततो रूपसहस्राणि प्रादुरासन्पृथक्पृथक् ॥११॥

11. athāstramarisaṁghaghnaṁ tvāṣṭramabhyasyadarjunaḥ ,
tato rūpasahasrāṇi prādurāsanpṛthakpṛthak.

11. atha astram arisaṃghaghnam tvāṣṭram abhyasyat
arjunaḥ tataḥ rūpasahasrāṇi prādurāsan pṛthak pṛthak

11. atha arjunaḥ arisaṃghaghnam tvāṣṭram astram abhyasyat
tataḥ pṛthak pṛthak rūpasahasrāṇi prādurāsan

11. Then Arjuna employed the Tvaṣṭra weapon, which destroys hosts of enemies. Thereupon, thousands of forms manifested, each distinct.

Words meanings summery:

• अथ (atha) - then (then, now, thereupon, moreover)

• अस्त्रम् (astram) - weapon (weapon, missile, projectile)

• अरिसंघघ्नम् (arisaṁghaghnam) - which destroys hosts of enemies (destroying hosts of enemies, enemy-multitude-slaying)

• त्वाष्ट्रम् (tvāṣṭram) - Tvaṣṭra's (weapon), divine (belonging to Tvaṣṭā, created by Tvaṣṭā, divine (weapon))

• अभ्यस्यत् (abhyasyat) - employed (he practiced, he wielded, he employed)

• अर्जुनः (arjunaḥ) - Arjuna (Arjuna (a proper name))

• ततः (tataḥ) - thereupon (then, thence, from that, thereupon)

• रूपसहस्राणि (rūpasahasrāṇi) - thousands of forms (thousands of forms, a thousand forms)

• प्रादुरासन् (prādurāsan) - manifested (they appeared, they manifested)

• पृथक् (pṛthak) - separately, distinct (separately, individually, apart)

• पृथक् (pṛthak) - separately, distinct (separately, individually, apart)

Words meanings and morphology

अथ (atha) - then (then, now, thereupon, moreover)

(indeclinable)

अस्त्रम् (astram) - weapon (weapon, missile, projectile)

(noun)

Accusative, neuter, singular of astra

astra - weapon, missile, projectile; a magical weapon

From root as (to throw, cast).

Root: as (class 4)

Note: Object of abhyasyat.

अरिसंघघ्नम् (arisaṁghaghnam) - which destroys hosts of enemies (destroying hosts of enemies, enemy-multitude-slaying)

(adjective)

Accusative, neuter, singular of arisaṃghaghna

arisaṁghaghna - destroying hosts of enemies

Compound. ari (enemy) + saṃgha (multitude) + ghna (destroying).

Compound type : tatpuruṣa (ari+saṃgha+ghna)

• ari – enemy, foe
  noun (masculine)
• saṃgha – multitude, host, collection, group
  noun (masculine)
• ghna – killing, destroying, slayer
  adjective (masculine)
  agent noun/adjective
  Derived from root han (to strike, kill) with suffix -a.
  Root: han (class 2)

Note: Agrees with astram.

त्वाष्ट्रम् (tvāṣṭram) - Tvaṣṭra's (weapon), divine (belonging to Tvaṣṭā, created by Tvaṣṭā, divine (weapon))

(adjective)

Accusative, neuter, singular of tvāṣṭra

tvāṣṭra - relating to Tvaṣṭā (the divine craftsman); a weapon associated with Tvaṣṭā

Derived from tvaṣṭṛ (Tvaṣṭā) with suffix aṇ.

Note: Agrees with astram.

अभ्यस्यत् (abhyasyat) - employed (he practiced, he wielded, he employed)

(verb)

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

From prefix abhi + root as (to throw, cast) or sometimes associated with yas (to exert).

Prefix: abhi

Root: as (class 4)

अर्जुनः (arjunaḥ) - Arjuna (Arjuna (a proper name))

(proper noun)

Nominative, masculine, singular of arjuna

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

Note: Subject of abhyasyat.

ततः (tataḥ) - thereupon (then, thence, from that, thereupon)

(indeclinable)

From pronominal stem tad.

रूपसहस्राणि (rūpasahasrāṇi) - thousands of forms (thousands of forms, a thousand forms)

(noun)

Nominative, neuter, plural of rūpasahasra

rūpasahasra - a thousand forms/shapes

Compound of rūpa (form) and sahasra (thousand).

Compound type : tatpuruṣa (rūpa+sahasra)

• rūpa – form, shape, image, appearance
  noun (neuter)
• sahasra – thousand; innumerable
  noun (neuter)

Note: Subject of prādurāsan.

प्रादुरासन् (prādurāsan) - manifested (they appeared, they manifested)

(verb)

3rd person , plural, active, past imperfect (laṅ) of prādurbhū

From indeclinable prādur (manifest) + root bhū (to be, become). Here, āsan is imperfect of as (to be), used as an auxiliary for prādurbhū.

Prefix: prādur

Root: bhū (class 1)

Note: Refers to rūpasahasrāṇi.

पृथक् (pṛthak) - separately, distinct (separately, individually, apart)

(indeclinable)

Note: Adverb modifying prādurāsan.

पृथक् (pṛthak) - separately, distinct (separately, individually, apart)

(indeclinable)

Note: Adverb modifying prādurāsan.