महाभारतः mahābhārataḥ - book-3, chapter-146, verse-26

अभिरामनदीकुञ्जनिर्झरोदरकन्दरम् ।
अप्सरोनूपुररवैः प्रनृत्तबहुबर्हिणम् ॥२६॥

26. abhirāmanadīkuñjanirjharodarakandaram ,
apsaronūpuraravaiḥ pranṛttabahubarhiṇam.

26. abhirāmanadīkuñjanirjharodarakandaram
apsaronūpuraravaiḥ pranṛttabahubarhiṇam

26. It was a region with enchanting river-groves, waterfalls, and caves within, where many peacocks danced vigorously to the sounds of the anklets of celestial nymphs (apsaras).

Words meanings summery:

• अभिरामनदीकुञ्जनिर्झरोदरकन्दरम् (abhirāmanadīkuñjanirjharodarakandaram) - a cave whose interior has charming river-groves and waterfalls

• अप्सरोनूपुररवैः (apsaronūpuraravaiḥ) - by the sounds of the anklets of celestial nymphs (apsaras)

• प्रनृत्तबहुबर्हिणम् (pranṛttabahubarhiṇam) - where many peacocks are dancing vigorously

Words meanings and morphology

अभिरामनदीकुञ्जनिर्झरोदरकन्दरम् (abhirāmanadīkuñjanirjharodarakandaram) - a cave whose interior has charming river-groves and waterfalls

(noun)

Accusative, neuter, singular of abhirāmanadīkuñjanirjharodarakandara

abhirāmanadīkuñjanirjharodarakandara - a cave whose interior has charming river-groves and waterfalls

Compound type : tatpuruṣa (abhirāma+nadīkuñja+nirjhara+udara+kandara)

• abhirāma – charming, beautiful, pleasing
  adjective
  from abhi-ram (to delight)
  Prefix: abhi
  Root: ram (class 1)
• nadīkuñja – river-grove
  noun (masculine)
• nirjhara – waterfall, cascade
  noun (masculine)
  from nir-jhṛ (to fall down)
  Prefix: nir
  Root: jhṛ (class 1)
• udara – interior, inside, belly
  noun (neuter)
• kandara – cave, cavern
  noun (neuter)

अप्सरोनूपुररवैः (apsaronūpuraravaiḥ) - by the sounds of the anklets of celestial nymphs (apsaras)

(noun)

Instrumental, masculine, plural of apsaronūpurarava

apsaronūpurarava - sounds of the anklets of apsaras

Compound type : ṣaṣṭhī tatpuruṣa (apsaras+nūpurarava)

• apsaras – celestial nymph
  noun (feminine)
• nūpurarava – sound of anklets
  noun (masculine)
• nūpura – anklet, foot-ornament
  noun (neuter)
• rava – sound, cry, roar
  noun (masculine)
  from ru (to cry)
  Root: ru (class 2)

प्रनृत्तबहुबर्हिणम् (pranṛttabahubarhiṇam) - where many peacocks are dancing vigorously

(noun)

Accusative, neuter, singular of pranṛttabahubarhiṇa

pranṛttabahubarhiṇa - where many peacocks are dancing vigorously

Compound type : bahuvrīhi (pranṛtta+bahu+barhiṇa)

• pranṛtta – dancing vigorously/well
  adjective
  Past Passive Participle
  from pra-nṛt
  Prefix: pra
  Root: nṛt (class 4)
• bahu – many, much
  adjective
• barhiṇa – peacock
  noun (masculine)