महाभारतः mahābhārataḥ - book-1, chapter-52, verse-20

सप्तशीर्षा द्विशीर्षाश्च पञ्चशीर्षास्तथापरे ।
कालानलविषा घोरा हुताः शतसहस्रशः ॥२०॥

20. saptaśīrṣā dviśīrṣāśca pañcaśīrṣāstathāpare ,
kālānalaviṣā ghorā hutāḥ śatasahasraśaḥ.

20. saptasīrṣāḥ dviśīrṣāḥ ca pañcaśīrṣāḥ tathā
apare kālānalaviṣāḥ ghorāḥ hutāḥ śatasahasraśaḥ

20. Seven-headed, two-headed, and five-headed Nāgas, as well as others, who were terrible and whose venom was like the fire of doom, were offered into the sacrificial fire by hundreds of thousands.

Words meanings summery:

• सप्तसीर्षाः (saptasīrṣāḥ) - referring to Nāgas with seven heads (seven-headed)

• द्विशीर्षाः (dviśīrṣāḥ) - referring to Nāgas with two heads (two-headed)

• च (ca) - connects the types of Nāgas (and)

• पञ्चशीर्षाः (pañcaśīrṣāḥ) - referring to Nāgas with five heads (five-headed)

• तथा (tathā) - implies 'and similarly' or 'as well as' (thus, so, likewise)

• अपरे (apare) - other Nāgas not specifically enumerated by head count (others, other ones)

• कालानलविषाः (kālānalaviṣāḥ) - possessing extremely potent and deadly venom (whose venom is like the fire of destruction)

• घोराः (ghorāḥ) - indicating their formidable and fearsome nature (terrible, dreadful, fierce)

• हुताः (hutāḥ) - referring to being cast into the sacrificial fire (offered (as oblation), sacrificed)

• शतसहस्रशः (śatasahasraśaḥ) - emphasizing the vast number of Nāgas sacrificed (by hundreds of thousands, in hundreds of thousands)

Words meanings and morphology

सप्तसीर्षाः (saptasīrṣāḥ) - referring to Nāgas with seven heads (seven-headed)

(adjective)

Nominative, masculine, plural of saptasīrṣa

saptasīrṣa - seven-headed

Compound type : bahuvrīhi (saptan+śīrṣa)

• saptan – seven
  numeral
• śīrṣa – head
  noun (neuter)

द्विशीर्षाः (dviśīrṣāḥ) - referring to Nāgas with two heads (two-headed)

(adjective)

Nominative, masculine, plural of dviśīrṣa

dviśīrṣa - two-headed

Compound type : bahuvrīhi (dvi+śīrṣa)

• dvi – two
  numeral
• śīrṣa – head
  noun (neuter)

च (ca) - connects the types of Nāgas (and)

(indeclinable)

पञ्चशीर्षाः (pañcaśīrṣāḥ) - referring to Nāgas with five heads (five-headed)

(adjective)

Nominative, masculine, plural of pañcaśīrṣa

pañcaśīrṣa - five-headed

Compound type : bahuvrīhi (pañcan+śīrṣa)

• pañcan – five
  numeral
• śīrṣa – head
  noun (neuter)

तथा (tathā) - implies 'and similarly' or 'as well as' (thus, so, likewise)

(indeclinable)

अपरे (apare) - other Nāgas not specifically enumerated by head count (others, other ones)

(adjective)

Nominative, masculine, plural of apara

apara - other, another, posterior

कालानलविषाः (kālānalaviṣāḥ) - possessing extremely potent and deadly venom (whose venom is like the fire of destruction)

(adjective)

Nominative, masculine, plural of kālānalaviṣa

kālānalaviṣa - whose venom is like the fire of destruction

Compound type : bahuvrīhi (kāla+anala+viṣa)

• kāla – time, death, Yama
  noun (masculine)
• anala – fire
  noun (masculine)
• viṣa – poison, venom
  noun (neuter)

घोराः (ghorāḥ) - indicating their formidable and fearsome nature (terrible, dreadful, fierce)

(adjective)

Nominative, masculine, plural of ghora

ghora - terrible, dreadful, fierce, frightful

हुताः (hutāḥ) - referring to being cast into the sacrificial fire (offered (as oblation), sacrificed)

(adjective)

Nominative, masculine, plural of huta

huta - offered, sacrificed, cast into fire

past passive participle

from root hu

Root: hu (class 3)

शतसहस्रशः (śatasahasraśaḥ) - emphasizing the vast number of Nāgas sacrificed (by hundreds of thousands, in hundreds of thousands)

(indeclinable)

formed with suffix -śaḥ