महाभारतः mahābhārataḥ - book-7, chapter-13, verse-11

मेदोमज्जास्थिसिकतामुष्णीषवरफेनिलाम् ।
संग्रामजलदापूर्णां प्रासमत्स्यसमाकुलाम् ॥११॥

11. medomajjāsthisikatāmuṣṇīṣavaraphenilām ,
saṁgrāmajaladāpūrṇāṁ prāsamatsyasamākulām.

11. medomajjāsthisikatām uṣṇīṣavaraphenilām
saṅgrāmajaladāpūrṇām prāsamatsyasamākulām

11. medomajjāsthisikatām uṣṇīṣavaraphenilām
saṅgrāmajaladāpūrṇām prāsamatsyasamākulām

11. It was like a river (of battle), with fat, marrow, and bones forming its sand, and excellent turbans as its foam. It was filled with the clouds of combat (saṅgrāma) and teeming with spears resembling fish.

Words meanings summery:

• मेदोमज्जास्थिसिकताम् (medomajjāsthisikatām) - describing the battlefield river as having fat, marrow, and bones as its riverbed sand (having fat, marrow, bone as sand)

• उष्णीषवरफेनिलाम् (uṣṇīṣavaraphenilām) - describing the battlefield river as having excellent turbans as its foam (having excellent turbans as foam)

• सङ्ग्रामजलदापूर्णाम् (saṅgrāmajaladāpūrṇām) - describing the battlefield river as filled with clouds of combat (filled with battle-clouds)

• प्रासमत्स्यसमाकुलाम् (prāsamatsyasamākulām) - describing the battlefield river as crowded with spears metaphorically acting as fish (crowded with spear-fish)

Words meanings and morphology

मेदोमज्जास्थिसिकताम् (medomajjāsthisikatām) - describing the battlefield river as having fat, marrow, and bones as its riverbed sand (having fat, marrow, bone as sand)

(adjective)

Accusative, feminine, singular of medomajjāsthisikatā

medomajjāsthisikatā - having fat, marrow, and bones as sand

Compound type : bahuvrīhi (medaḥ+majjā+asthi+sikatā)

• medaḥ – fat, marrow, suet
  noun (neuter)
• majjā – marrow, pith, pulp
  noun (feminine)
• asthi – bone
  noun (neuter)
• sikatā – sand, gravel
  noun (feminine)

Note: Compound describing a river, where fat, marrow, and bones metaphorically serve as sand.

उष्णीषवरफेनिलाम् (uṣṇīṣavaraphenilām) - describing the battlefield river as having excellent turbans as its foam (having excellent turbans as foam)

(adjective)

Accusative, feminine, singular of uṣṇīṣavaraphenilā

uṣṇīṣavaraphenilā - having excellent turbans as foam

Compound type : bahuvrīhi (uṣṇīṣa+vara+phenila)

• uṣṇīṣa – turban, crest, diadem
  noun (masculine)
• vara – excellent, best, finest; boon, blessing
  adjective (masculine)
• phenila – foamy, frothy
  adjective (masculine)

Note: Compound describing a river, where excellent turbans metaphorically form its foam.

सङ्ग्रामजलदापूर्णाम् (saṅgrāmajaladāpūrṇām) - describing the battlefield river as filled with clouds of combat (filled with battle-clouds)

(adjective)

Accusative, feminine, singular of saṅgrāmajaladāpūrṇā

saṅgrāmajaladāpūrṇā - filled with battle-clouds

Compound type : tatpuruṣa (saṅgrāma+jalada+āpūrṇa)

• saṅgrāma – battle, war, combat
  noun (masculine)
• jalada – cloud (lit. water-giver)
  noun (masculine)
  Derived from jala (water) + √dā (to give).
  Root: dā (class 3)
• āpūrṇa – filled, full, complete
  adjective (masculine)
  Past Passive Participle
  From prefix ā- and root √pṝ (to fill).
  Prefix: ā
  Root: pṝ (class 9)

Note: Compound describing a river, filled with clouds of battle.

प्रासमत्स्यसमाकुलाम् (prāsamatsyasamākulām) - describing the battlefield river as crowded with spears metaphorically acting as fish (crowded with spear-fish)

(adjective)

Accusative, feminine, singular of prāsamatsyasamākulā

prāsamatsyasamākulā - crowded with spears as fish

Compound type : tatpuruṣa (prāsa+matsya+samākula)

• prāsa – spear, dart, javelin
  noun (masculine)
  Prefix: pra
  Root: as (class 4)
• matsya – fish
  noun (masculine)
• samākula – crowded, confused, agitated, filled with
  adjective (masculine)
  From prefix sam-ā- and root √kul (to gather, heap).
  Prefixes: sam+ā
  Root: kul (class 1)

Note: Compound describing a river crowded with spears resembling fish.