महाभारतः mahābhārataḥ - book-6, chapter-45, verse-28

ततः शतसहस्रेण सौभद्रं प्रपितामहः ।
अवाकिरदमेयात्मा शराणां नतपर्वणाम् ॥२८॥

28. tataḥ śatasahasreṇa saubhadraṁ prapitāmahaḥ ,
avākiradameyātmā śarāṇāṁ nataparvaṇām.

28. tataḥ śatasahasreṇa saubhadram prapitāmahaḥ
avākirat ameyātmā śarāṇām nataparvaṇām

28. tataḥ ameyātmā prapitāmahaḥ nataparvaṇām
śarāṇām śatasahasreṇa saubhadram avākirat

28. Then, the great-grandfather (prapitāmaha) Bhishma, of immeasurable spirit (ameyātmā), overwhelmed Abhimanyu with a hundred thousand arrows with depressed joints (nataparvaṇām).

Words meanings summery:

• ततः (tataḥ) - then, thence, afterwards

• शतसहस्रेण (śatasahasreṇa) - with a hundred thousand

• सौभद्रम् (saubhadram) - Abhimanyu (son of Subhadra)

• प्रपितामहः (prapitāmahaḥ) - Bhishma, as the great-grandfather of the Pandavas and Kauravas. (the great-grandfather)

• अवाकिरत् (avākirat) - showered, scattered, overwhelmed

• अमेयात्मा (ameyātmā) - of immeasurable spirit, of unbounded soul

• शराणाम् (śarāṇām) - of arrows

• नतपर्वणाम् (nataparvaṇām) - Refers to well-made, swift arrows, often implying that the joint (parvan) near the fletching is smoothly depressed for stability or aerodynamics. (of bent-jointed (arrows), with depressed nocks)

Words meanings and morphology

ततः (tataḥ) - then, thence, afterwards

(indeclinable)

Adverbial derivative from 'tad' (that)

शतसहस्रेण (śatasahasreṇa) - with a hundred thousand

(noun)

Instrumental, neuter, singular of śatasahasra

śatasahasra - a hundred thousand, a lakh

Compound

Compound type : tatpuruṣa (śata+sahasra)

• śata – hundred
  numeral (neuter)
• sahasra – thousand
  numeral (neuter)

सौभद्रम् (saubhadram) - Abhimanyu (son of Subhadra)

(proper noun)

Accusative, masculine, singular of saubhadra

saubhadra - son of Subhadra (Abhimanyu)

Taddhita derivative from Subhadrā (सुभद्रा + aṇ)

प्रपितामहः (prapitāmahaḥ) - Bhishma, as the great-grandfather of the Pandavas and Kauravas. (the great-grandfather)

(noun)

Nominative, masculine, singular of prapitāmaha

prapitāmaha - great-grandfather

Compound

Compound type : karmadhāraya (pra+pitāmaha)

• pra – before, forth, very
  indeclinable
  Prefix
• pitāmaha – grandfather (father's father)
  noun (masculine)

Note: Subject of the sentence.

अवाकिरत् (avākirat) - showered, scattered, overwhelmed

(verb)

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

Imperfect tense

From root kṛ (कृ, class 6, kirati) with upasarga ava (अव) + augment a (अ) + suffix t (त्).

Prefix: ava

Root: kṛ (class 6)

Note: Main verb.

अमेयात्मा (ameyātmā) - of immeasurable spirit, of unbounded soul

(adjective)

Nominative, masculine, singular of ameyātman

ameyātman - whose self is immeasurable, of boundless spirit/mind

Compound

Compound type : bahuvrīhi (ameya+ātman)

• ameya – immeasurable, immense, incomprehensible
  adjective (masculine)
  Gerundive/Future Passive Participle (negative)
  From root mā (मा) with prefix a (अ) and suffix ya (य)
  Prefix: a
  Root: mā (class 2)
• ātman – self, soul, spirit, essence
  noun (masculine)
  Root: an (class 2)

शराणाम् (śarāṇām) - of arrows

(noun)

Genitive, masculine, plural of śara

śara - arrow, reed

Root: śṛ (class 9)

नतपर्वणाम् (nataparvaṇām) - Refers to well-made, swift arrows, often implying that the joint (parvan) near the fletching is smoothly depressed for stability or aerodynamics. (of bent-jointed (arrows), with depressed nocks)

(adjective)

Genitive, masculine, plural of nataparvan

nataparvan - having bent or depressed joints/knots (said of arrows indicating good craftsmanship)

Compound

Compound type : bahuvrīhi (nata+parvan)

• nata – bent, bowed, humble
  adjective (masculine)
  Past Passive Participle
  From root nam (नम्) + kta (क्त) suffix
  Root: nam (class 1)
• parvan – knot, joint, section; festival day
  noun (neuter)