महाभारतः mahābhārataḥ - book-7, chapter-131, verse-122

केशशैवलकल्माषां भीरूणां कश्मलावहाम् ।
नागेन्द्रहययोधानां शरीरव्ययसंभवाम् ॥१२२॥

122. keśaśaivalakalmāṣāṁ bhīrūṇāṁ kaśmalāvahām ,
nāgendrahayayodhānāṁ śarīravyayasaṁbhavām.

122. keśaśaivalakalmāṣām bhīrūṇām kaśmalāvahām
nāgendrahayayodhānām śarīravyayasaṃbhavām

122. keśaśaivalakalmāṣām bhīrūṇām kaśmalāvahām
nāgendrahayayodhānām śarīravyayasaṃbhavām

122. This river, stained with hair like moss, brings distress to the fearful, and arises from the destruction of the bodies of great elephants, horses, and warriors.

Words meanings summery:

• केशशैवलकल्माषाम् (keśaśaivalakalmāṣām) - stained with hair acting as moss or algae (stained with hair like moss or dirt)

• भीरूणाम् (bhīrūṇām) - of the fearful ones

• कश्मलावहाम् (kaśmalāvahām) - causing confusion or fainting (bringing distress, causing confusion)

• नागेन्द्रहययोधानाम् (nāgendrahayayodhānām) - of great elephants, horses, and warriors

• शरीरव्ययसंभवाम् (śarīravyayasaṁbhavām) - originating from the loss of bodies (in battle) (born from the destruction of bodies)

Words meanings and morphology

केशशैवलकल्माषाम् (keśaśaivalakalmāṣām) - stained with hair acting as moss or algae (stained with hair like moss or dirt)

(adjective)

Accusative, feminine, singular of keśaśaivalakalmāṣā

keśaśaivalakalmāṣa - having hair as moss and dirt/stains

Compound type : bahuvrīhi (keśa+śaivala+kalmāṣa)

• keśa – hair
  noun (masculine)
• śaivala – moss, algae
  noun (neuter)
• kalmāṣa – spot, stain, dirt, mixed color
  noun (masculine)

Note: Modifies an implied feminine noun like 'river' (nadī).

भीरूणाम् (bhīrūṇām) - of the fearful ones

(adjective)

Genitive, masculine, plural of bhīru

bhīru - fearful, timid, coward

Root: bhī (class 3)

कश्मलावहाम् (kaśmalāvahām) - causing confusion or fainting (bringing distress, causing confusion)

(adjective)

Accusative, feminine, singular of kaśmalāvahā

kaśmalāvaha - bringing distress, causing confusion, bringing fainting

Compound type : tatpuruṣa (kaśmala+āvaha)

• kaśmala – distress, confusion, fainting, impurity
  noun (neuter)
• āvaha – bringing, causing, producing
  adjective (masculine)
  gerundive/agent noun
  From ā-√vah (to carry, bring)
  Prefix: ā
  Root: vah (class 1)

Note: Modifies an implied feminine noun like 'river'.

नागेन्द्रहययोधानाम् (nāgendrahayayodhānām) - of great elephants, horses, and warriors

(noun)

Genitive, masculine, plural of nāgendrahayayodha

nāgendrahayayodha - great elephants, horses, and warriors

Compound type : dvandva (nāgendra+haya+yodha)

• nāgendra – chief elephant, great elephant, king of serpents
  noun (masculine)
  nāga (elephant/serpent) + indra (chief/lord)
• haya – horse
  noun (masculine)
  Root: hi (class 3)
• yodha – warrior, fighter
  noun (masculine)
  From root yudh (to fight)
  Root: yudh (class 4)

शरीरव्ययसंभवाम् (śarīravyayasaṁbhavām) - originating from the loss of bodies (in battle) (born from the destruction of bodies)

(adjective)

Accusative, feminine, singular of śarīravyayasaṃbhavā

śarīravyayasaṁbhava - born from the destruction/loss of bodies

Compound type : tatpuruṣa (śarīra+vyaya+saṃbhava)

• śarīra – body
  noun (neuter)
• vyaya – expenditure, loss, destruction, waste
  noun (masculine)
  From vi-√i (to go out, pass away)
  Prefix: vi
  Root: i (class 2)
• saṃbhava – origin, birth, production, arising from
  noun (masculine)
  From sam-√bhū (to be, arise)
  Prefix: sam
  Root: bhū (class 1)

Note: Modifies an implied feminine noun like 'river'.