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

उत्तमाङ्गोपलतलां निस्त्रिंशझषसेविताम् ।
रथनागह्रदोपेतां नानाभरणनीरजाम् ॥१३॥

13. uttamāṅgopalatalāṁ nistriṁśajhaṣasevitām ,
rathanāgahradopetāṁ nānābharaṇanīrajām.

13. uttamāṅgopalatalām nistriṃśajhaṣasevitām
rathanāgahradopeṭām nānābharaṇanīrajām

13. uttamāṅgopalatalām nistriṃśajhaṣasevitām
rathanāgahradopeṭām nānābharaṇanīrajām

13. Its heads were like surfaces of rock, frequented by swords (nistriṃśa) that resembled fish. It possessed chariots and elephants as its deep pools, and various ornaments appeared as its lotuses.

Words meanings summery:

• उत्तमाङ्गोपलतलाम् (uttamāṅgopalatalām) - describing the battlefield river as having severed heads metaphorically as rocky surfaces (having heads as the surface of rocks)

• निस्त्रिंशझषसेविताम् (nistriṁśajhaṣasevitām) - describing the battlefield river as having swords moving like fish (frequented by swords as fish)

• रथनागह्रदोपेटाम् (rathanāgahradopeṭām) - describing the battlefield river as having chariots and elephants acting as deep pools or lakes (endowed with chariot-elephants as lakes)

• नानाभरणनीरजाम् (nānābharaṇanīrajām) - describing the battlefield river as having scattered ornaments resembling lotuses (having various ornaments as lotuses)

Words meanings and morphology

उत्तमाङ्गोपलतलाम् (uttamāṅgopalatalām) - describing the battlefield river as having severed heads metaphorically as rocky surfaces (having heads as the surface of rocks)

(adjective)

Accusative, feminine, singular of uttamāṅgopalatalā

uttamāṅgopalatalā - having heads as the surface of rocks

Compound type : bahuvrīhi (uttama-aṅga+upala+tala)

• uttama-aṅga – head (lit. best limb)
  noun (neuter)
• upala – stone, rock, gem
  noun (masculine)
• tala – surface, plane, flat land; bottom
  noun (neuter)

Note: Compound describing the battlefield river as having heads resembling rocky surfaces.

निस्त्रिंशझषसेविताम् (nistriṁśajhaṣasevitām) - describing the battlefield river as having swords moving like fish (frequented by swords as fish)

(adjective)

Accusative, feminine, singular of nistriṃśajhaṣasevitā

nistriṁśajhaṣasevitā - frequented by swords as fish

Compound type : bahuvrīhi (nistriṃśa+jhaṣa+sevitā)

• nistriṃśa – sword, scimitar
  noun (masculine)
• jhaṣa – fish, a large fish
  noun (masculine)
• sevitā – frequented, served, inhabited
  adjective (feminine)
  Past Passive Participle
  From root √sev (to serve, frequent).
  Root: sev (class 1)

Note: Compound describing the battlefield river as frequented by swords resembling fish.

रथनागह्रदोपेटाम् (rathanāgahradopeṭām) - describing the battlefield river as having chariots and elephants acting as deep pools or lakes (endowed with chariot-elephants as lakes)

(adjective)

Accusative, feminine, singular of rathanāgahradopeṭā

rathanāgahradopeṭā - endowed with chariot-elephants as lakes

Compound type : bahuvrīhi (ratha+nāga+hrada+upeta)

• ratha – chariot, car
  noun (masculine)
• nāga – elephant, snake
  noun (masculine)
• hrada – lake, deep pool, pond
  noun (masculine)
• upeta – endowed with, possessed of, furnished with
  adjective (masculine)
  Past Passive Participle
  From prefix upa- and root √i (to go).
  Prefix: upa
  Root: i (class 2)

Note: Compound describing the battlefield river as having chariots and elephants as deep pools.

नानाभरणनीरजाम् (nānābharaṇanīrajām) - describing the battlefield river as having scattered ornaments resembling lotuses (having various ornaments as lotuses)

(adjective)

Accusative, feminine, singular of nānābharaṇanīrajā

nānābharaṇanīrajā - having various ornaments as lotuses

Compound type : bahuvrīhi (nānā+ābharaṇa+nīraja)

• nānā – various, diverse, manifold
  indeclinable
• ābharaṇa – ornament, decoration, jewelry
  noun (neuter)
  Prefix: ā
  Root: bhṛ (class 3)
• nīraja – lotus (lit. water-born)
  noun (neuter)
  Derived from nīra (water) + √jan (to be born).
  Root: jan (class 4)

Note: Compound describing the battlefield river as having various ornaments resembling lotuses.