महाभारतः mahābhārataḥ - book-5, chapter-188, verse-18

उक्त्वा भीष्मवधायेति प्रविवेश हुताशनम् ।
ज्येष्ठा काशिसुता राजन्यमुनामभितो नदीम् ॥१८॥

18. uktvā bhīṣmavadhāyeti praviveśa hutāśanam ,
jyeṣṭhā kāśisutā rājanyamunāmabhito nadīm.

18. uktvā bhīṣmavadhāya iti praviveśa hutāśanam
jyeṣṭhā kāśisutā rājan yamunām abhitaḥ nadīm

18. rājan jyeṣṭhā kāśisutā bhīṣmavadhāya iti uktvā
yamunām abhitaḥ nadīm hutāśanam praviveśa

18. O king, the eldest daughter of Kashi, having declared "for the slaying of Bhishma" thus, entered the fire (hutāśanam) near the Yamuna river.

Words meanings summery:

• उक्त्वा (uktvā) - having spoken, having said

• भीष्मवधाय (bhīṣmavadhāya) - for the slaying of Bhishma, for Bhishma's death

• इति (iti) - introduces or concludes a direct quote (thus, so, saying)

• प्रविवेश (praviveśa) - entered

• हुताशनम् (hutāśanam) - the fire (one who consumes oblations)

• ज्येष्ठा (jyeṣṭhā) - the eldest (daughter) (the eldest, the oldest, the best)

• काशिसुता (kāśisutā) - Ambā, the daughter of the king of Kashi (daughter of Kashi)

• राजन् (rājan) - O king (addressing Dhṛtarāṣṭra) (O king)

• यमुनाम् (yamunām) - the Yamuna river (the Yamuna river (accusative))

• अभितः (abhitaḥ) - near (the Yamuna river) (near, around, on both sides of)

• नदीम् (nadīm) - the river

Words meanings and morphology

उक्त्वा (uktvā) - having spoken, having said

(indeclinable)

Absolutive (Gerund)

Formed from √vac (to speak) with the suffix -tvā

Root: vac (class 2)

भीष्मवधाय (bhīṣmavadhāya) - for the slaying of Bhishma, for Bhishma's death

(noun)

Dative, masculine, singular of bhīṣmavadhā

bhīṣmavadhā - the slaying of Bhishma

Compound type : Tatpurusha (bhīṣma+vadha)

• bhīṣma – Bhishma (name of a character)
  proper noun (masculine)
• vadha – slaying, killing, murder
  noun (masculine)
  Root: vadh (class 1)

Note: Used to express purpose: 'for the slaying'.

इति (iti) - introduces or concludes a direct quote (thus, so, saying)

(indeclinable)

प्रविवेश (praviveśa) - entered

(verb)

3rd person , singular, active, perfect (liṭ) of praviś

Prefix: pra

Root: viś (class 6)

हुताशनम् (hutāśanam) - the fire (one who consumes oblations)

(noun)

Accusative, masculine, singular of hutāśana

hutāśana - fire, one who consumes oblations

Compound type : Tatpurusha (huta+aśana)

• huta – offered, sacrificed, cast into fire
  participle (masculine)
  Past Passive Participle
  Past passive participle of √hu (to offer, sacrifice)
  Root: hu (class 3)
• aśana – eating, food, that which eats
  noun (masculine)
  Root: aś (class 9)

ज्येष्ठा (jyeṣṭhā) - the eldest (daughter) (the eldest, the oldest, the best)

(adjective)

Nominative, feminine, singular of jyeṣṭha

jyeṣṭha - eldest, oldest, best, most excellent

Note: Agrees with 'kāśisutā'.

काशिसुता (kāśisutā) - Ambā, the daughter of the king of Kashi (daughter of Kashi)

(proper noun)

Nominative, feminine, singular of kāśisutā

kāśisutā - daughter of Kashi

Compound type : Tatpurusha (kāśi+sutā)

• kāśi – Kashi (name of a kingdom/city, or its king)
  proper noun (masculine)
• sutā – daughter
  noun (feminine)

राजन् (rājan) - O king (addressing Dhṛtarāṣṭra) (O king)

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

यमुनाम् (yamunām) - the Yamuna river (the Yamuna river (accusative))

(proper noun)

Accusative, feminine, singular of yamunā

yamunā - Yamuna (name of a sacred river)

अभितः (abhitaḥ) - near (the Yamuna river) (near, around, on both sides of)

(indeclinable)

नदीम् (nadīm) - the river

(noun)

Accusative, feminine, singular of nadī

nadī - river