महाभारतः mahābhārataḥ - book-7, chapter-141, verse-61

तत्रासीत्सुमहद्युद्धं द्रोणस्याथ परैः सह ।
घोरे तमसि मग्नानां निघ्नतामितरेतरम् ॥६१॥

61. tatrāsītsumahadyuddhaṁ droṇasyātha paraiḥ saha ,
ghore tamasi magnānāṁ nighnatāmitaretaram.

61. tatra āsīt su-mahat yuddham droṇasya atha paraiḥ
saha ghore tamasi magnānām nighnatām itara-itaram

61. Then, a very great battle took place there, between Droṇa and his enemies, as they, plunged into dense darkness, struck one another.

Words meanings summery:

• तत्र (tatra) - there, in that place

• आसीत् (āsīt) - it was, there was, it existed

• सु-महत् (su-mahat) - very great, very large

• युद्धम् (yuddham) - battle, fight, war

• द्रोणस्य (droṇasya) - of Droṇa

• अथ (atha) - then, next, thereupon

• परैः (paraiḥ) - by enemies, with enemies

• सह (saha) - with, along with

• घोरे (ghore) - in dreadful, in terrible

• तमसि (tamasi) - in darkness

• मग्नानाम् (magnānām) - of those who were plunged, of those immersed

• निघ्नताम् (nighnatām) - of those striking

• इतर-इतरम् (itara-itaram) - each other, one another

Words meanings and morphology

तत्र (tatra) - there, in that place

(indeclinable)

आसीत् (āsīt) - it was, there was, it existed

(verb)

3rd person , singular, active, imperfect (laṅ) of as

imperfect tense

root as, imperfect 3rd singular

Root: as (class 2)

सु-महत् (su-mahat) - very great, very large

(adjective)

Nominative, neuter, singular of sumahat

sumahat - very great, immense, noble

Compound type : karmadhāraya (su+mahat)

• su – good, well, very, excellent
  indeclinable
• mahat – great, large, vast, noble
  adjective (neuter)

युद्धम् (yuddham) - battle, fight, war

(noun)

Nominative, neuter, singular of yuddha

yuddha - battle, fight, war; fought, warring

past passive participle (used as noun)

from root yudh (to fight)

Root: yudh (class 4)

द्रोणस्य (droṇasya) - of Droṇa

(proper noun)

Genitive, masculine, singular of droṇa

droṇa - name of a teacher of archery, preceptor of the Kauravas and Pāṇḍavas

अथ (atha) - then, next, thereupon

(indeclinable)

परैः (paraiḥ) - by enemies, with enemies

(noun)

Instrumental, masculine, plural of para

para - other, another, enemy; highest, supreme

सह (saha) - with, along with

(indeclinable)

Note: governs instrumental case

घोरे (ghore) - in dreadful, in terrible

(adjective)

Locative, neuter, singular of ghora

ghora - dreadful, terrible, fierce, awful, vehement

तमसि (tamasi) - in darkness

(noun)

Locative, neuter, singular of tamas

tamas - darkness, gloom; ignorance, inertia (one of the three guṇas)

मग्नानाम् (magnānām) - of those who were plunged, of those immersed

(past passive participle)

Note: refers to the combatants (enemies and Drona's side)

निघ्नताम् (nighnatām) - of those striking

(present active participle)

Note: refers to the combatants (enemies and Drona's side)

इतर-इतरम् (itara-itaram) - each other, one another

(indeclinable)

reduplication of itara

Compound type : dvandva (itara+itara)

• itara – other, another
  pronoun (masculine)