महाभारतः mahābhārataḥ - book-3, chapter-155, verse-27

नानाद्रुमनिरोधेषु वसन्तः शैलसानुषु ।
पर्वतं विविशुः श्वेतं चतुर्थेऽहनि पाण्डवाः ॥२७॥

27. nānādrumanirodheṣu vasantaḥ śailasānuṣu ,
parvataṁ viviśuḥ śvetaṁ caturthe'hani pāṇḍavāḥ.

27. nānādrumanirodheṣu vasantaḥ śailasānuṣu
parvatam viviśuḥ śvetam caturthe ahani pāṇḍavāḥ

27. Residing amidst dense groups of various trees and on mountain slopes, the Pāṇḍavas entered the white mountain on the fourth day.

Words meanings summery:

• नानाद्रुमनिरोधेषु (nānādrumanirodheṣu) - amidst dense groups of various trees (in thickets of various trees, in places obstructed by various trees)

• वसन्तः (vasantaḥ) - residing (there) (dwelling, residing)

• शैलसानुषु (śailasānuṣu) - on mountain slopes (on mountain peaks, on mountain slopes)

• पर्वतम् (parvatam) - the mountain (as destination) (the mountain)

• विविशुः (viviśuḥ) - they entered

• श्वेतम् (śvetam) - white (mountain) (white, bright)

• चतुर्थे (caturthe) - on the fourth (day) (on the fourth)

• अहनि (ahani) - on the day

• पाण्डवाः (pāṇḍavāḥ) - the Pāṇḍavas

Words meanings and morphology

नानाद्रुमनिरोधेषु (nānādrumanirodheṣu) - amidst dense groups of various trees (in thickets of various trees, in places obstructed by various trees)

(noun)

Locative, masculine, plural of nānādrumanirodha

nānādrumanirodha - obstruction/thicket of various trees

Compound type : tatpuruṣa (nānā+druma+nirodha)

• nānā – various, diverse
  indeclinable
• druma – tree
  noun (masculine)
• nirodha – obstruction, confinement, thicket
  noun (masculine)
  Derived from root √rudh with prefix ni.
  Prefix: ni
  Root: rudh (class 7)

Note: Refers to places.

वसन्तः (vasantaḥ) - residing (there) (dwelling, residing)

(adjective)

Nominative, masculine, plural of vasant

vasant - dwelling, residing

Present Active Participle

Derived from root √vas (to dwell) + śatṛ suffix.

Root: vas (class 1)

शैलसानुषु (śailasānuṣu) - on mountain slopes (on mountain peaks, on mountain slopes)

(noun)

Locative, masculine, plural of śailasānu

śailasānu - mountain slope, mountain peak

Compound type : tatpuruṣa (śaila+sānu)

• śaila – mountain, rock, rocky
  noun (masculine)
  Root: śil
• sānu – ridge, peak, slope (of a mountain)
  noun (masculine)

Note: Denotes location.

पर्वतम् (parvatam) - the mountain (as destination) (the mountain)

(noun)

Accusative, masculine, singular of parvata

parvata - mountain, hill

Note: Object of viviśuḥ.

विविशुः (viviśuḥ) - they entered

(verb)

3rd person , plural, active, perfect (liṭ) of viś

Perfect tense, 3rd person plural of √viś.

Root: viś (class 6)

श्वेतम् (śvetam) - white (mountain) (white, bright)

(adjective)

Accusative, masculine, singular of śveta

śveta - white, bright, clean

Root: śvit (class 1)

चतुर्थे (caturthe) - on the fourth (day) (on the fourth)

(adjective)

Locative, masculine, singular of caturtha

caturtha - fourth

Formed from catur (four) + tha suffix.

अहनि (ahani) - on the day

(noun)

Locative, neuter, singular of ahan

ahan - day

Note: Denotes time.

पाण्डवाः (pāṇḍavāḥ) - the Pāṇḍavas

(proper noun)

Nominative, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu, son of Pāṇḍu

Patronymic from Pāṇḍu.

Note: Subject of viviśuḥ.