महाभारतः mahābhārataḥ - book-7, chapter-112, verse-19

पुरा निघ्नन्ति राधेयं भीमचापच्युताः शराः ।
ते यतध्वं महेष्वासाः सूतपुत्रस्य रक्षणे ॥१९॥

19. purā nighnanti rādheyaṁ bhīmacāpacyutāḥ śarāḥ ,
te yatadhvaṁ maheṣvāsāḥ sūtaputrasya rakṣaṇe.

19. purā nighnanti rādheyam bhīmacāpacyutāḥ śarāḥ
te yatadhvam maheṣvāsāḥ sūtaputrasya rakṣaṇe

19. te maheṣvāsāḥ sūtaputrasya rakṣaṇe yatadhvam
purā bhīmacāpacyutāḥ śarāḥ rādheyam nighnanti

19. O great archers (mahā-īṣvāsas), strive for the protection of Sūta's son (Karṇa), lest the arrows released from Bhīma's bow destroy Rādhīya (Karṇa).

Words meanings summery:

• पुरा (purā) - before, lest

• निघ्नन्ति (nighnanti) - they kill, they destroy, they strike

• राधेयम् (rādheyam) - Karṇa, son of Rādhā (Rādhīya)

• भीमचापच्युताः (bhīmacāpacyutāḥ) - released from Bhīma's bow

• शराः (śarāḥ) - arrows

• ते (te) - refers to the great archers being addressed (you (plural))

• यतध्वम् (yatadhvam) - strive, exert yourselves

• महेष्वासाः (maheṣvāsāḥ) - O great archers, O mighty bowmen

• सूतपुत्रस्य (sūtaputrasya) - of Karṇa, who was raised by a charioteer (sūta) (of the son of Sūta)

• रक्षणे (rakṣaṇe) - in the protection

Words meanings and morphology

पुरा (purā) - before, lest

(indeclinable)

निघ्नन्ति (nighnanti) - they kill, they destroy, they strike

(verb)

3rd person , plural, active, present (laṭ) of han

Prefix: ni

Root: han (class 2)

राधेयम् (rādheyam) - Karṇa, son of Rādhā (Rādhīya)

(proper noun)

Accusative, masculine, singular of rādheya

rādheya - son of Rādhā (an epithet for Karṇa)

Patronymic derived from Rādhā.

भीमचापच्युताः (bhīmacāpacyutāḥ) - released from Bhīma's bow

(adjective)

Nominative, masculine, plural of bhīmacāpacyuta

bhīmacāpacyuta - fallen/released from Bhīma's bow

Compound type : pañcamī-tatpuruṣa (bhīma+cāpa+cyuta)

• bhīma – Bhīma (a name); terrible, formidable
  proper noun (masculine)
• cāpa – bow
  noun (masculine)
• cyuta – fallen, released, dropped, deviated
  adjective (masculine)
  Past Passive Participle
  Derived from root cyu- with kta suffix (past passive participle)
  Root: cyu (class 1)

शराः (śarāḥ) - arrows

(noun)

Nominative, masculine, plural of śara

śara - arrow

ते (te) - refers to the great archers being addressed (you (plural))

(pronoun)

Nominative, masculine, plural of tad

tad - that, this, they, those

Note: Here functioning as a pronoun for the implied 'you all'.

यतध्वम् (yatadhvam) - strive, exert yourselves

(verb)

2nd person , plural, middle, imperative (loṭ) of yat

Root: yat (class 1)

महेष्वासाः (maheṣvāsāḥ) - O great archers, O mighty bowmen

(noun)

Vocative, masculine, plural of maheṣvāsa

maheṣvāsa - great archer, mighty bowman

Compound type : karmadhāraya (mahā+iṣvāsa)

• mahā – great, mighty
  adjective
• iṣvāsa – archer, bowman (one who shoots arrows)
  noun (masculine)

सूतपुत्रस्य (sūtaputrasya) - of Karṇa, who was raised by a charioteer (sūta) (of the son of Sūta)

(proper noun)

Genitive, masculine, singular of sūtaputra

sūtaputra - son of a charioteer (an epithet for Karṇa)

Compound type : ṣaṣṭhī-tatpuruṣa (sūta+putra)

• sūta – charioteer, bard, one of mixed caste
  noun (masculine)
• putra – son
  noun (masculine)

रक्षणे (rakṣaṇe) - in the protection

(noun)

Locative, neuter, singular of rakṣaṇa

rakṣaṇa - protection, guarding, defending

Derived from root rakṣ- with lyuṭ suffix

Root: rakṣ (class 1)