महाभारतः mahābhārataḥ - book-7, chapter-81, verse-18

ततो युधिष्ठिरो द्रोणं नवत्या नतपर्वणाम् ।
आजघ्ने भरतश्रेष्ठ सर्वमर्मसु भारत ॥१८॥

18. tato yudhiṣṭhiro droṇaṁ navatyā nataparvaṇām ,
ājaghne bharataśreṣṭha sarvamarmasu bhārata.

18. tataḥ yudhiṣṭhiraḥ droṇam navatyā nataparvaṇām
ājaghne bharataśreṣṭha sarvamarmasu bhārata

18. bharataśreṣṭha bhārata tataḥ yudhiṣṭhiraḥ
navatyā nataparvaṇām droṇam sarvamarmasu ājaghne

18. O best among the Bharatas, O Bharata, then Yudhishthira struck Drona with ninety sharp-jointed arrows in all his vital parts.

Words meanings summery:

• ततः (tataḥ) - then (then, thence, afterwards)

• युधिष्ठिरः (yudhiṣṭhiraḥ) - Yudhishthira, the eldest Pandava prince (Yudhishthira)

• द्रोणम् (droṇam) - Drona, the preceptor of the Pandavas and Kauravas (Drona)

• नवत्या (navatyā) - with ninety (arrows) (with ninety)

• नतपर्वणाम् (nataparvaṇām) - of sharp-jointed arrows (of sharp-jointed, of bent-knotted)

• आजघ्ने (ājaghne) - struck (him) (struck, hit)

• भरतश्रेष्ठ (bharataśreṣṭha) - O best among the descendants of Bharata (addressing the listener, likely Dhritarashtra or Sanjaya) (O best among Bharatas)

• सर्वमर्मसु (sarvamarmasu) - in all of Drona's vital spots (in all vital spots)

• भारत (bhārata) - O descendant of Bharata (addressing the listener, likely Dhritarashtra or Sanjaya) (O Bharata)

Words meanings and morphology

ततः (tataḥ) - then (then, thence, afterwards)

(indeclinable)

derived from tad (that)

युधिष्ठिरः (yudhiṣṭhiraḥ) - Yudhishthira, the eldest Pandava prince (Yudhishthira)

(proper noun)

Nominative, masculine, singular of yudhiṣṭhira

yudhiṣṭhira - firm in battle, Yudhishthira

Compound type : aluk-tatpuruṣa (yudhi+sthira)

• yudhi – in battle, in war
  noun (feminine)
  Root: yudh (class 4)
• sthira – firm, steady, constant
  adjective (masculine)
  Root: sthā (class 1)

द्रोणम् (droṇam) - Drona, the preceptor of the Pandavas and Kauravas (Drona)

(proper noun)

Accusative, masculine, singular of droṇa

droṇa - Drona, a measure, a kind of jar

नवत्या (navatyā) - with ninety (arrows) (with ninety)

(numeral)

नतपर्वणाम् (nataparvaṇām) - of sharp-jointed arrows (of sharp-jointed, of bent-knotted)

(adjective)

Genitive, plural of nataparvan

nataparvan - having bent knots/joints (describing arrows)

Compound type : bahuvrīhi (nata+parvan)

• nata – bent, bowed
  Past Passive Participle
  Past Passive Participle
  from root nam
  Root: nam (class 1)
• parvan – knot, joint, section
  noun (neuter)

Note: agrees with implied 'arrows'

आजघ्ने (ājaghne) - struck (him) (struck, hit)

(verb)

3rd person , singular, middle, past perfect (lit) of han

Prefix: ā

Root: han (class 2)

Note: The atmanepada form suggests a result for the agent (Yudhishthira) or the action being done for oneself.

भरतश्रेष्ठ (bharataśreṣṭha) - O best among the descendants of Bharata (addressing the listener, likely Dhritarashtra or Sanjaya) (O best among Bharatas)

(adjective)

Vocative, masculine, singular of bharataśreṣṭha

bharataśreṣṭha - best of the Bharatas

Compound type : tatpuruṣa (bharata+śreṣṭha)

• bharata – descendant of Bharata, an Indian
  noun (masculine)
  Root: bhṛ (class 1)
• śreṣṭha – best, most excellent
  adjective (masculine)
  superlative of praśasya
  Root: praśasya

सर्वमर्मसु (sarvamarmasu) - in all of Drona's vital spots (in all vital spots)

(noun)

Locative, neuter, plural of sarvamarma

sarvamarma - all vital parts

Compound type : karmadhāraya (sarva+marma)

• sarva – all, every
  pronoun
• marma – vital spot, vulnerable point
  noun (neuter)
  Root: mṛ

भारत (bhārata) - O descendant of Bharata (addressing the listener, likely Dhritarashtra or Sanjaya) (O Bharata)

(adjective)

Vocative, masculine, singular of bhārata

bhārata - descendant of Bharata, relating to Bharata, Indian

Root: bhṛ (class 1)