महाभारतः mahābhārataḥ - book-7, chapter-57, verse-69

द्वितीयं चापरं नागं सहस्रशिरसं वरम् ।
वमन्तं विपुलां ज्वालां ददृशातेऽग्निवर्चसम् ॥६९॥

69. dvitīyaṁ cāparaṁ nāgaṁ sahasraśirasaṁ varam ,
vamantaṁ vipulāṁ jvālāṁ dadṛśāte'gnivarcasam.

69. dvitīyam ca aparam nāgam sahasraśirasam varam
vamantam vipulām jvālām dadṛśāte agnivarcasam

69. ca arjunācyutau (implied) dvitīyam aparam sahasraśirasam
varam vipulām jvālām vamantam agnivarcasam nāgam dadṛśāte

69. And they saw another, a second excellent serpent, with a thousand heads, emitting vast flames, and fire-like in splendor (agnivarcasam).

Words meanings summery:

• द्वितीयम् (dvitīyam) - second

• च (ca) - and, also

• अपरम् (aparam) - another, other, subsequent

• नागम् (nāgam) - serpent, snake

• सहस्रशिरसम् (sahasraśirasam) - thousand-headed

• वरम् (varam) - excellent (excellent, best, boon)

• वमन्तम् (vamantam) - emitting, vomiting

• विपुलाम् (vipulām) - vast, extensive, great

• ज्वालाम् (jvālām) - flame, blaze

• ददृशाते (dadṛśāte) - they (two) saw

• अग्निवर्चसम् (agnivarcasam) - fire-like in splendor (agnivarcasam) (having the splendor of fire, fire-like in luster)

Words meanings and morphology

द्वितीयम् (dvitīyam) - second

(adjective)

Accusative, masculine, singular of dvitīya

dvitīya - second

च (ca) - and, also

(indeclinable)

अपरम् (aparam) - another, other, subsequent

(adjective)

Accusative, masculine, singular of apara

apara - another, other, subsequent

नागम् (nāgam) - serpent, snake

(noun)

Accusative, masculine, singular of nāga

nāga - serpent, snake, Nāga (mythical serpentine being)

सहस्रशिरसम् (sahasraśirasam) - thousand-headed

(adjective)

Accusative, masculine, singular of sahasraśiras

sahasraśiras - thousand-headed

Compound type : bahuvrīhi (sahasra+śiras)

• sahasra – thousand
  noun (neuter)
• śiras – head
  noun (neuter)

वरम् (varam) - excellent (excellent, best, boon)

(adjective)

Accusative, masculine, singular of vara

vara - excellent, best

वमन्तम् (vamantam) - emitting, vomiting

(adjective)

Accusative, masculine, singular of vamat

vamat - emitting, vomiting

Present Active Participle

From root vam (to vomit, emit) + śatṛ suffix.

Root: vam (class 1)

विपुलाम् (vipulām) - vast, extensive, great

(adjective)

Accusative, feminine, singular of vipula

vipula - vast, extensive, great

ज्वालाम् (jvālām) - flame, blaze

(noun)

Accusative, feminine, singular of jvālā

jvālā - flame, blaze

ददृशाते (dadṛśāte) - they (two) saw

(verb)

3rd person , dual, middle, perfect (Lit) of dṛś

Perfect tense, 3rd dual (ātmanepada)

From root dṛś (to see), perfect tense, reduplicated form.

Root: dṛś (class 1)

अग्निवर्चसम् (agnivarcasam) - fire-like in splendor (agnivarcasam) (having the splendor of fire, fire-like in luster)

(adjective)

Accusative, masculine, singular of agnivarcas

agnivarcas - having the splendor of fire, brilliant like fire

Compound type : bahuvrīhi (agni+varcas)

• agni – fire
  noun (masculine)
• varcas – splendor, luster, brilliance
  noun (neuter)