वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-45, verse-29

निनदन्तः स्वरान् घोरान् राक्षसा जग्मुरग्रतः ।
भीमरूपा महाकायाः प्रहस्तस्य पुरःसराः ॥२९॥

29. ninadantaḥ svarān ghorān rākṣasā jagmuragrataḥ ,
bhīmarūpā mahākāyāḥ prahastasya puraḥsarāḥ.

29. ninadantaḥ svarān ghorān rākṣasāḥ jagmuḥ agrataḥ
bhīmarūpāḥ mahākāyāḥ prahastasya puraḥsarāḥ

29. ghorān svarān ninadantaḥ bhīmarūpāḥ mahākāyāḥ
prahastasya puraḥsarāḥ rākṣasāḥ agrataḥ jagmuḥ

29. The rākṣasas, making dreadful roars, went ahead. They were frightful in appearance, immense in body, and served as Prahastha's advance guard.

Words meanings summery:

• निनदन्तः (ninadantaḥ) - roaring, making sounds

• स्वरान् (svarān) - sounds, cries

• घोरान् (ghorān) - terrible, dreadful

• राक्षसाः (rākṣasāḥ) - the rākṣasas (demons)

• जग्मुः (jagmuḥ) - went, proceeded

• अग्रतः (agrataḥ) - in front, ahead

• भीमरूपाः (bhīmarūpāḥ) - of terrible forms, frightful in appearance

• महाकायाः (mahākāyāḥ) - of huge bodies, immense in body

• प्रहस्तस्य (prahastasya) - of Prahastha

• पुरःसराः (puraḥsarāḥ) - going in front, vanguard, leaders

Words meanings and morphology

निनदन्तः (ninadantaḥ) - roaring, making sounds

(adjective)

Nominative, masculine, plural of ninadat

nad - to roar, to sound, to cry

Prefix: ni

Root: nad (class 1)

Note: Present Active Participle. Qualifies rākṣasāḥ.

स्वरान् (svarān) - sounds, cries

(noun)

Accusative, masculine, plural of svara

svara - sound, tone, voice, cry

Root: svṛ (class 1)

घोरान् (ghorān) - terrible, dreadful

(adjective)

Accusative, masculine, plural of ghora

ghora - terrible, dreadful, formidable

Note: Agrees with svarān.

राक्षसाः (rākṣasāḥ) - the rākṣasas (demons)

(noun)

Nominative, masculine, plural of rākṣasa

rākṣasa - a rākṣasa (demon), belonging to rākṣasas

जग्मुः (jagmuḥ) - went, proceeded

(verb)

3rd person , plural, active, perfect (lit) of gam

Root: gam (class 1)

अग्रतः (agrataḥ) - in front, ahead

(indeclinable)

Derived from agra with suffix -tas.

भीमरूपाः (bhīmarūpāḥ) - of terrible forms, frightful in appearance

(adjective)

Nominative, masculine, plural of bhīmarūpa

bhīmarūpa - having a terrible form

Compound type : bahuvrīhi (bhīma+rūpa)

• bhīma – terrible, dreadful, formidable
  adjective (masculine)
  Derived from root bhī (to fear).
  Root: bhī (class 3)
• rūpa – form, shape, appearance
  noun (neuter)

Note: Qualifies rākṣasāḥ.

महाकायाः (mahākāyāḥ) - of huge bodies, immense in body

(adjective)

Nominative, masculine, plural of mahākāya

mahākāya - having a large body, gigantic

Compound type : bahuvrīhi (mahā+kāya)

• mahā – great, large, mighty
  adjective
  Adjectival stem of mahat.
• kāya – body
  noun (masculine)
  Root: ci (class 5)

Note: Qualifies rākṣasāḥ.

प्रहस्तस्य (prahastasya) - of Prahastha

(proper noun)

Genitive, masculine, singular of prahasta

prahasta - Prahastha (name of a rākṣasa general)

पुरःसराः (puraḥsarāḥ) - going in front, vanguard, leaders

(noun)

Nominative, masculine, plural of puraḥsara

puraḥsara - going before, leading, forerunner, vanguard

Compound of puras (before) and sara (going).

Compound type : tatpuruṣa (puras+sara)

• puras – before, in front, eastward
  indeclinable
• sara – going, moving, flowing
  adjective (masculine)
  Derived from root sṛ (to go).
  Root: sṛ (class 1)

Note: Qualifies rākṣasāḥ.