वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-76, verse-13

तेषां चिन्तयतां तत्र सहस्राक्षः पुरंदरः ।
वज्रं प्रगृह्य बाहुभ्यां प्रहिणोद्वृत्रमूर्धनि ॥१३॥

13. teṣāṃ cintayatāṃ tatra sahasrākṣaḥ puraṃdaraḥ ,
vajraṃ pragṛhya bāhubhyāṃ prahiṇodvṛtramūrdhani.

13. teṣām cintayatām tatra sahasrākṣaḥ purandaraḥ
vajram pragṛhya bāhubhyām prahiṇōt vṛtramūrdhani

13. While they were thus deliberating, Indra (Sahasrākṣa), the destroyer of cities (purandara), grasped the thunderbolt with both arms and hurled it at Vṛtra's head.

Words meanings summery:

• तेषाम् (teṣām) - of the gods (of them)

• चिन्तयताम् (cintayatām) - while they were thinking/deliberating (thinking, deliberating)

• तत्र (tatra) - there, then, at that moment

• सहस्राक्षः (sahasrākṣaḥ) - Indra (the thousand-eyed)

• पुरन्दरः (purandaraḥ) - destroyer of cities (epithet of Indra)

• वज्रम् (vajram) - thunderbolt, diamond

• प्रगृह्य (pragṛhya) - having grasped, having taken up

• बाहुभ्याम् (bāhubhyām) - with two arms

• प्रहिण्ओत् (prahiṇōt) - he hurled, he threw

• वृत्रमूर्धनि (vṛtramūrdhani) - on Vṛtra's head

Words meanings and morphology

तेषाम् (teṣām) - of the gods (of them)

(pronoun)

Genitive, masculine, plural of tad

tad - that, he, she, it

चिन्तयताम् (cintayatām) - while they were thinking/deliberating (thinking, deliberating)

(adjective)

Genitive, masculine, plural of cintayat

cintayat - thinking, considering, reflecting

Present Active Participle

present active participle of root cint (to think)

Root: cit (class 10)

Note: Used in genitive absolute construction.

तत्र (tatra) - there, then, at that moment

(indeclinable)

सहस्राक्षः (sahasrākṣaḥ) - Indra (the thousand-eyed)

(proper noun)

Nominative, masculine, singular of sahasrākṣa

sahasrākṣa - thousand-eyed; epithet of Indra

Compound type : bahuvrīhi (sahasra+akṣa)

• sahasra – thousand
  numeral (neuter)
• akṣa – eye, die (of dice)
  noun (neuter)

पुरन्दरः (purandaraḥ) - destroyer of cities (epithet of Indra)

(proper noun)

Nominative, masculine, singular of purandara

purandara - destroyer of cities; epithet of Indra

derived from pura (city) and dar (to split/destroy)

Compound type : upapada-tatpuruṣa (pura+dara)

• pura – city, fortress
  noun (neuter)
• dara – splitting, breaking, destroying
  adjective (masculine)
  derived from root dṝ (to split, tear, destroy)
  Root: dṝ (class 9)

वज्रम् (vajram) - thunderbolt, diamond

(noun)

Accusative, neuter, singular of vajra

vajra - thunderbolt (weapon of Indra), diamond

प्रगृह्य (pragṛhya) - having grasped, having taken up

(indeclinable)

Absolutive (Gerund)

absolutive form of root grah (to seize, take) with prefix pra-

Prefix: pra

Root: grah (class 9)

बाहुभ्याम् (bāhubhyām) - with two arms

(noun)

Instrumental, masculine, dual of bāhu

bāhu - arm

प्रहिण्ओत् (prahiṇōt) - he hurled, he threw

(verb)

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

from root hi (to send) with prefix pra-

Prefix: pra

Root: hi (class 5)

वृत्रमूर्धनि (vṛtramūrdhani) - on Vṛtra's head

(noun)

Locative, masculine, singular of vṛtramūrdhan

vṛtramūrdhan - Vṛtra's head

Compound type : tatpuruṣa (vṛtra+mūrdhan)

• vṛtra – Vṛtra (name of a demon)
  proper noun (masculine)
• mūrdhan – head, skull, top
  noun (masculine)