महाभारतः mahābhārataḥ - book-7, chapter-70, verse-17

सनिस्त्रिंशपुरोवातः शक्तिप्रासर्ष्टिसंवृतः ।
ज्याविद्युच्चापसंह्रादो धृष्टद्युम्नबलाहकः ॥१७॥

17. sanistriṁśapurovātaḥ śaktiprāsarṣṭisaṁvṛtaḥ ,
jyāvidyuccāpasaṁhrādo dhṛṣṭadyumnabalāhakaḥ.

17. saniṣtriṃśapurovātaḥ śaktiprāsarṣṭisaṃvṛtaḥ
jyāvidyuccāpasaṃhrādaḥ dhṛṣṭadyumnabalāhakaḥ

17. dhṛṣṭadyumnabalāhakaḥ saniṣtriṃśapurovātaḥ
śaktiprāsarṣṭisaṃvṛtaḥ jyāvidyuccāpasaṃhrādaḥ

17. Dhṛṣṭadyumna, like a rain-cloud (balāhaka), whose vanguard wind was his swords, whose body was enveloped by spears, javelins, and lances, and whose bowstring was lightning and bow the thunder.

Words meanings summery:

• सनिष्त्रिंशपुरोवातः (saniṣtriṁśapurovātaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud with swords as the driving wind (having swords as its vanguard wind)

• शक्तिप्रासर्ष्टिसंवृतः (śaktiprāsarṣṭisaṁvṛtaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud enveloped by weapons (covered/enveloped with spears, javelins, and lances)

• ज्याविद्युच्चापसंह्रादः (jyāvidyuccāpasaṁhrādaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud with lightning and thunder (whose bowstring is lightning and bow is thunder)

• धृष्टद्युम्नबलाहकः (dhṛṣṭadyumnabalāhakaḥ) - Dhṛṣṭadyumna, the rain-cloud

Words meanings and morphology

सनिष्त्रिंशपुरोवातः (saniṣtriṁśapurovātaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud with swords as the driving wind (having swords as its vanguard wind)

(adjective)

Nominative, masculine, singular of saniṣtriṃśapurovāta

saniṣtriṁśapurovāta - having swords as its vanguard wind

Compound type : bahuvrihi (sa+nistriṃśa+purovāta)

• sa – with, accompanied by
  indeclinable
• nistriṃśa – sword, scimitar
  noun (masculine)
• purovāta – vanguard wind, front wind
  noun (masculine)

शक्तिप्रासर्ष्टिसंवृतः (śaktiprāsarṣṭisaṁvṛtaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud enveloped by weapons (covered/enveloped with spears, javelins, and lances)

(adjective)

Nominative, masculine, singular of śaktiprāsarṣṭisaṃvṛta

śaktiprāsarṣṭisaṁvṛta - covered with spears, javelins, and lances

Compound type : tatpuruṣa (śakti+prāsa+ṛṣṭi+saṃvṛta)

• śakti – spear, power, energy
  noun (feminine)
• prāsa – javelin, dart
  noun (masculine)
• ṛṣṭi – lance, spear
  noun (feminine)
• saṃvṛta – covered, enveloped, concealed
  participle (masculine)
  Past Passive Participle
  Derived from root vṛ (to cover) with prefix sam
  Prefix: sam
  Root: vṛ (class 5)

ज्याविद्युच्चापसंह्रादः (jyāvidyuccāpasaṁhrādaḥ) - referring to Dhṛṣṭadyumna, metaphorically a cloud with lightning and thunder (whose bowstring is lightning and bow is thunder)

(adjective)

Nominative, masculine, singular of jyāvidyuccāpasaṃhrāda

jyāvidyuccāpasaṁhrāda - whose bowstring is lightning and bow is thunder

Compound type : bahuvrihi (jyā+vidyut+cāpa+saṃhrāda)

• jyā – bowstring, earth
  noun (feminine)
• vidyut – lightning
  noun (feminine)
  Root: vidyut
• cāpa – bow
  noun (masculine)
• saṃhrāda – roar, thunder
  noun (masculine)
  Prefix: sam
  Root: hrād (class 1)

धृष्टद्युम्नबलाहकः (dhṛṣṭadyumnabalāhakaḥ) - Dhṛṣṭadyumna, the rain-cloud

(noun)

Nominative, masculine, singular of dhṛṣṭadyumnabalāhaka

dhṛṣṭadyumnabalāhaka - Dhṛṣṭadyumna (likened to) a rain-cloud

Compound type : tatpuruṣa (dhṛṣṭadyumna+balāhaka)

• dhṛṣṭadyumna – Dhṛṣṭadyumna (a proper name)
  proper noun (masculine)
• balāhaka – rain-cloud
  noun (masculine)