महाभारतः mahābhārataḥ - book-7, chapter-101, verse-13

तदस्य राजन्कैकेयः प्रत्यवारयदच्युतः ।
ब्राह्मेणैव महाबाहुराहवे समुदीरितम् ॥१३॥

13. tadasya rājankaikeyaḥ pratyavārayadacyutaḥ ,
brāhmeṇaiva mahābāhurāhave samudīritam.

13. tat asya rājan kaikeyaḥ pratyavārayat acyutaḥ
brāhmeṇa eva mahābāhuḥ āhave samudīritam

13. rājan acyutaḥ mahābāhuḥ kaikeyaḥ tat asya
āhave brāhmeṇa eva samudīritam pratyavārayat

13. O king, the unwavering and mighty-armed Kekaya countered that (weapon) of Drona's in battle, specifically with a Brahma weapon (astra) that had been sent forth.

Words meanings summery:

• तत् (tat) - that, that (weapon)

• अस्य (asya) - of Drona (his, of him)

• राजन् (rājan) - O king

• कैकेयः (kaikeyaḥ) - the Kekaya (warrior)

• प्रत्यवारयत् (pratyavārayat) - he countered, he warded off, he checked

• अच्युतः (acyutaḥ) - the unwavering (Kekaya) (unwavering, firm, imperishable)

• ब्राह्मेण (brāhmeṇa) - by a Brahma weapon, by a Brahma (astra)

• एव (eva) - indeed, only, just

• महाबाहुः (mahābāhuḥ) - mighty-armed, great-armed one

• आहवे (āhave) - in battle, in combat

• समुदीरितम् (samudīritam) - sent forth, discharged, hurled

Words meanings and morphology

तत् (tat) - that, that (weapon)

(pronoun)

Accusative, neuter, singular of tad

tad - that

Note: Refers to Drona's weapon.

अस्य (asya) - of Drona (his, of him)

(pronoun)

Genitive, masculine, singular of idam

idam - this, he, him

Note: Refers to Drona.

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

कैकेयः (kaikeyaḥ) - the Kekaya (warrior)

(proper noun)

Nominative, masculine, singular of kaikeya

kaikeya - a prince or warrior of the Kekaya kingdom

प्रत्यवारयत् (pratyavārayat) - he countered, he warded off, he checked

(verb)

3rd person , singular, active, imperfect (laṅ) of prati-ava-vṛ

Prefixes: prati+ava

Root: vṛ (class 5)

अच्युतः (acyutaḥ) - the unwavering (Kekaya) (unwavering, firm, imperishable)

(adjective)

Nominative, masculine, singular of acyuta

acyuta - unwavering, firm, imperishable, steadfast

Compound type : nañ-tatpuruṣa (a+cyuta)

• a – not, un-
  indeclinable
• cyuta – fallen, moved, deviated
  adjective
  Past Passive Participle
  Root: cyu (class 1)

Note: Refers to Kaikeya.

ब्राह्मेण (brāhmeṇa) - by a Brahma weapon, by a Brahma (astra)

(adjective)

Instrumental, neuter, singular of brāhma

brāhma - relating to Brahma or Brahman; sacred; belonging to a Brahmin

Note: Implied 'astram' (weapon).

एव (eva) - indeed, only, just

(indeclinable)

महाबाहुः (mahābāhuḥ) - mighty-armed, great-armed one

(adjective)

Nominative, masculine, singular of mahābāhu

mahābāhu - one with mighty arms, mighty-armed

Compound type : bahuvrīhi (mahā+bāhu)

• mahā – great, large
  adjective
• bāhu – arm
  noun (masculine)

Note: Refers to Kaikeya.

आहवे (āhave) - in battle, in combat

(noun)

Locative, masculine, singular of āhava

āhava - battle, combat, conflict

समुदीरितम् (samudīritam) - sent forth, discharged, hurled

(adjective)

Accusative, neuter, singular of samudīrita

samudīrita - sent forth, discharged, thrown; uttered, spoken

Past Passive Participle

Derived from root √īr (to move, excite) with upasargas 'sam-' and 'ud-'.

Prefixes: sam+ud

Root: īr (class 2)

Note: Agrees with implied 'astram' (weapon).