महाभारतः mahābhārataḥ - book-7, chapter-150, verse-70

ततः स तोयदो भूत्वा नीलः सेन्द्रायुधो दिवि ।
अश्मवृष्टिभिरत्युग्रः सूतपुत्रमवाकिरत् ॥७०॥

70. tataḥ sa toyado bhūtvā nīlaḥ sendrāyudho divi ,
aśmavṛṣṭibhiratyugraḥ sūtaputramavākirat.

70. tataḥ saḥ toyadaḥ bhūtvā nīlaḥ sa-indrāyudhaḥ
divi aśmavṛṣṭibhiḥ ati-ugraḥ sūtaputram avākirat

70. tataḥ saḥ divi nīlaḥ sa-indrāyudhaḥ ati-ugraḥ
toyadaḥ bhūtvā aśmavṛṣṭibhiḥ sūtaputram avākirat

70. Then, that (mountain) transformed into a fierce blue cloud in the sky, complete with a rainbow, and began to assail Karna, the son of Sūta, with exceedingly terrible showers of stones.

Words meanings summery:

• ततः (tataḥ) - then, thereafter

• सः (saḥ) - that (mountain, now transformed) (that, he)

• तोयदः (toyadaḥ) - cloud (literally 'water-giver')

• भूत्वा (bhūtvā) - having become

• नीलः (nīlaḥ) - blue, dark blue, black

• स-इन्द्रायुधः (sa-indrāyudhaḥ) - with a rainbow (literally 'with Indra's bow')

• दिवि (divi) - in the sky, in heaven

• अश्मवृष्टिभिः (aśmavṛṣṭibhiḥ) - with showers of stones, by hailstorms

• अति-उग्रः (ati-ugraḥ) - exceedingly terrible, very fierce

• सूतपुत्रम् (sūtaputram) - Karna, who was raised by Adhiratha, a charioteer (sūta) (the son of Sūta (Karna))

• अवाकिरत् (avākirat) - showered upon, assailed, scattered

Words meanings and morphology

ततः (tataḥ) - then, thereafter

(indeclinable)

सः (saḥ) - that (mountain, now transformed) (that, he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

तोयदः (toyadaḥ) - cloud (literally 'water-giver')

(noun)

Nominative, masculine, singular of toyada

toyada - cloud (giver of water)

Compound type : upapada tatpuruṣa (toya+da)

• toya – water
  noun (neuter)
• da – giving, giver
  adjective (masculine)
  Derived from root dā (to give)
  Root: dā

भूत्वा (bhūtvā) - having become

(indeclinable)

absolutive

Gerund/absolutive form of the root bhū

Root: bhū (class 1)

नीलः (nīlaḥ) - blue, dark blue, black

(adjective)

Nominative, masculine, singular of nīla

nīla - blue, dark blue, indigo, black

स-इन्द्रायुधः (sa-indrāyudhaḥ) - with a rainbow (literally 'with Indra's bow')

(adjective)

Nominative, masculine, singular of sa-indrāyudha

sa-indrāyudha - with a rainbow (Indra's bow is a metaphor for a rainbow)

Compound type : sahā bahuvrīhi (sa+indra+āyudha)

• sa – with, together with
  indeclinable
• indra – Indra (king of gods), chief, lord
  proper noun (masculine)
• āyudha – weapon, bow
  noun (neuter)

दिवि (divi) - in the sky, in heaven

(noun)

Locative, feminine, singular of div

div - sky, heaven, day

अश्मवृष्टिभिः (aśmavṛṣṭibhiḥ) - with showers of stones, by hailstorms

(noun)

Instrumental, feminine, plural of aśmavṛṣṭi

aśmavṛṣṭi - shower of stones, hailstorm

Compound type : ṣaṣṭhī tatpuruṣa (aśman+vṛṣṭi)

• aśman – stone, rock, thunderbolt
  noun (masculine)
• vṛṣṭi – rain, shower, showering
  noun (feminine)
  Derived from root vṛṣ (to rain)
  Root: vṛṣ

अति-उग्रः (ati-ugraḥ) - exceedingly terrible, very fierce

(adjective)

Nominative, masculine, singular of atyugra

atyugra - exceedingly terrible, very fierce, extremely violent

Compound type : prādi-samāsa (ati+ugra)

• ati – very, exceedingly, beyond, over
  indeclinable
• ugra – terrible, fierce, dreadful, violent
  adjective (masculine)

सूतपुत्रम् (sūtaputram) - Karna, who was raised by Adhiratha, a charioteer (sūta) (the son of Sūta (Karna))

(noun)

Accusative, masculine, singular of sūtaputra

sūtaputra - son of a charioteer (sūta); Karna's epithet

Compound type : ṣaṣṭhī tatpuruṣa (sūta+putra)

• sūta – charioteer, bard; a mixed caste; Adhiratha (Karna's foster father)
  noun (masculine)
• putra – son
  noun (masculine)

अवाकिरत् (avākirat) - showered upon, assailed, scattered

(verb)

3rd person , singular, active, imperfect past (laṅ) of avakīr

Root kṛ (to scatter, throw) with prefix ava

Prefix: ava

Root: kṛ (class 6)