महाभारतः mahābhārataḥ - book-6, chapter-67, verse-18

तोमरप्रासनाराचगजाश्वरथयोधिनाम् ।
बलेन महता भीष्मः समसज्जत्किरीटिना ॥१८॥

18. tomaraprāsanārācagajāśvarathayodhinām ,
balena mahatā bhīṣmaḥ samasajjatkirīṭinā.

18. tomara-prāsa-nārāca-gaja-aśva-ratha-yodhinām
balena mahatā bhīṣmaḥ samasajjat kirīṭinā

18. bhīṣmaḥ mahatā balena
tomara-prāsa-nārāca-gaja-aśva-ratha-yodhinām kirīṭinā samasajjat

18. Bhishma, with a mighty army of fighters using javelins, spears, arrows, elephants, horses, and chariots, engaged with the crowned one (Arjuna).

Words meanings summery:

• तोमर-प्रास-नाराच-गज-अश्व-रथ-योधिनाम् (tomara-prāsa-nārāca-gaja-aśva-ratha-yodhinām) - of fighters using javelins, spears, arrows, elephants, horses, and chariots (of those fighting with spears, javelins, arrows, elephants, horses, and chariots)

• बलेन (balena) - by a force/army (by force, by army, by power)

• महता (mahatā) - with a mighty (by a great, with a great)

• भीष्मः (bhīṣmaḥ) - Bhishma (Bhishma (name))

• समसज्जत् (samasajjat) - engaged (he engaged, he confronted, he met)

• किरीटिना (kirīṭinā) - with the crowned one (Arjuna) (by the crowned one, with the crowned one)

Words meanings and morphology

तोमर-प्रास-नाराच-गज-अश्व-रथ-योधिनाम् (tomara-prāsa-nārāca-gaja-aśva-ratha-yodhinām) - of fighters using javelins, spears, arrows, elephants, horses, and chariots (of those fighting with spears, javelins, arrows, elephants, horses, and chariots)

(noun)

Genitive, masculine, plural of tomara-prāsa-nārāca-gaja-aśva-ratha-yodhin

tomara-prāsa-nārāca-gaja-aśva-ratha-yodhin - one who fights with tomara, prāsa, nārāca, gaja, aśva, ratha

Compound type : Tatpuruṣa (tomara+prāsa+nārāca+gaja+aśva+ratha+yodhin)

• tomara – an iron club, spear
  noun (masculine)
• prāsa – a javelin, spear
  noun (masculine)
  from pra-√as (to throw)
  Prefix: pra
  Root: as (class 4)
• nārāca – an iron arrow
  noun (masculine)
• gaja – elephant
  noun (masculine)
• aśva – horse
  noun (masculine)
• ratha – chariot
  noun (masculine)
• yodhin – fighter, warrior
  noun (masculine)
  from √yudh (to fight)
  Root: yudh (class 4)

Note: Modifies 'balena' (of the army of such fighters)

बलेन (balena) - by a force/army (by force, by army, by power)

(noun)

Instrumental, neuter, singular of bala

bala - strength, power, force, army

महता (mahatā) - with a mighty (by a great, with a great)

(adjective)

Instrumental, neuter, singular of mahat

mahat - great, large, mighty, important

भीष्मः (bhīṣmaḥ) - Bhishma (Bhishma (name))

(proper noun)

Nominative, masculine, singular of bhīṣma

bhīṣma - dreadful, terrible (adj.), Bhishma (proper noun)

Root: bhī (class 3)

Note: subject of 'samasajjat'

समसज्जत् (samasajjat) - engaged (he engaged, he confronted, he met)

(verb)

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

Imperfect active

Imperfect 3rd singular active of sam-√sañj

Prefix: sam

Root: sañj (class 1)

किरीटिना (kirīṭinā) - with the crowned one (Arjuna) (by the crowned one, with the crowned one)

(proper noun)

Instrumental, masculine, singular of kirīṭin

kirīṭin - crowned, wearing a diadem, a name for Arjuna

from kirīṭa (crown) + -in (possessive suffix)