वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-31, verse-33

राक्षसेन्द्रगजैस्तैस्तु क्षोभ्यते नर्मदा नदी ।
वामनाञ्जनपद्माद्यैर्गङ्गा इव महागजैः ॥३३॥

33. rākṣasendragajaistaistu kṣobhyate narmadā nadī ,
vāmanāñjanapadmādyairgaṅgā iva mahāgajaiḥ.

33. rākṣasendragajaiḥ taiḥ tu kṣobhyate narmadā
nadī vāmanāñjanapadmādyaiḥ gaṅgā iva mahāgajaiḥ

33. taiḥ rākṣasendragajaiḥ tu narmadā nadī kṣobhyate,
vāmanāñjanapadmādyaiḥ mahāgajaiḥ gaṅgā iva

33. Indeed, by those foremost rākṣasas, who were like great elephants, the Narmadā (river) was agitated, just as the Gaṅgā (river) is disturbed by mighty elephants such as Vāmana, Añjana, and Padma.

Words meanings summery:

• राक्षसेन्द्रगजैः (rākṣasendragajaiḥ) - by the chief rākṣasas who are like elephants

• तैः (taiḥ) - by those (rākṣasas) (by them)

• तु (tu) - indeed, but, however

• क्षोभ्यते (kṣobhyate) - is agitated, is disturbed, is stirred

• नर्मदा (narmadā) - the Narmadā (river)

• नदी (nadī) - river

• वामनाञ्जनपद्माद्यैः (vāmanāñjanapadmādyaiḥ) - by the names of famous mythical elephants (by Vāmana, Añjana, Padma, and others)

• गङ्गा (gaṅgā) - the Gaṅgā (river)

• इव (iva) - like, as, similar to

• महागजैः (mahāgajaiḥ) - by great elephants

Words meanings and morphology

राक्षसेन्द्रगजैः (rākṣasendragajaiḥ) - by the chief rākṣasas who are like elephants

(noun)

Instrumental, masculine, plural of rākṣasendragaja

rākṣasendragaja - chief of rākṣasas who are like elephants

Compound type : tatpurusha (rākṣasa+indra+gaja)

• rākṣasa – demon, rākṣasa
  noun (masculine)
• indra – chief, lord, best
  noun (masculine)
• gaja – elephant
  noun (masculine)

तैः (taiḥ) - by those (rākṣasas) (by them)

(pronoun)

Instrumental, masculine, plural of tad

tad - that, those

तु (tu) - indeed, but, however

(indeclinable)

क्षोभ्यते (kṣobhyate) - is agitated, is disturbed, is stirred

(verb)

3rd person , singular, passive, present (lat) of kṣubh

Passive form of root kṣubh- (to be agitated)

Root: kṣubh (class 1)

नर्मदा (narmadā) - the Narmadā (river)

(proper noun)

Nominative, feminine, singular of narmadā

narmadā - Narmadā (a sacred river in India)

नदी (nadī) - river

(noun)

Nominative, feminine, singular of nadī

nadī - river

Note: Appositive to Narmadā.

वामनाञ्जनपद्माद्यैः (vāmanāñjanapadmādyaiḥ) - by the names of famous mythical elephants (by Vāmana, Añjana, Padma, and others)

(proper noun)

Instrumental, masculine, plural of vāmanāñjanapadmādi

vāmanāñjanapadmādi - Vāmana, Añjana, Padma and others (names of elephants)

Dvandva compound + ādi (etc.)

Compound type : dvandva (vāmana+añjana+padma+ādi)

• vāmana – Vāmana (name of an elephant)
  proper noun (masculine)
• añjana – Añjana (name of an elephant)
  proper noun (masculine)
• padma – Padma (name of an elephant)
  proper noun (masculine)
• ādi – beginning, and so on, et cetera
  indeclinable

गङ्गा (gaṅgā) - the Gaṅgā (river)

(proper noun)

Nominative, feminine, singular of gaṅgā

gaṅgā - Gaṅgā (a sacred river in India)

इव (iva) - like, as, similar to

(indeclinable)

महागजैः (mahāgajaiḥ) - by great elephants

(noun)

Instrumental, masculine, plural of mahāgaja

mahāgaja - great elephant

Compound type : karmadhāraya (mahā+gaja)

• mahā – great, large, mighty
  adjective
• gaja – elephant
  noun (masculine)