वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-31, verse-43

वानरैर्बलवद्भिश्च बभूव द्रुमपाणिभिः ।
सर्वतः संवृता लङ्का दुष्प्रवेशापि वायुना ॥४३॥

43. vānarairbalavadbhiśca babhūva drumapāṇibhiḥ ,
sarvataḥ saṃvṛtā laṅkā duṣpraveśāpi vāyunā.

43. vānaraiḥ balavadbhiḥ ca babhūva drumapāṇibhiḥ
sarvataḥ saṃvṛtā laṅkā duṣpraveśā api vāyunā

43. laṅkā balavadbhiḥ drumapāṇibhiḥ vānaraiḥ ca sarvataḥ saṃvṛtā (sati) vāyunā api duṣpraveśā babhūva.

43. Lanka became completely enveloped on all sides by powerful monkeys (vanaras) with trees in their hands, making it difficult to enter even for the wind.

Words meanings summery:

• वानरैः (vānaraiḥ) - by monkeys

• बलवद्भिः (balavadbhiḥ) - by strong ones, by powerful ones

• च (ca) - and, also

• बभूव (babhūva) - became, was

• द्रुमपाणिभिः (drumapāṇibhiḥ) - by those with trees in their hands

• सर्वतः (sarvataḥ) - from all sides, completely

• संवृता (saṁvṛtā) - covered, surrounded, enveloped

• लङ्का (laṅkā) - Lanka (the city of Ravana)

• दुष्प्रवेशा (duṣpraveśā) - difficult to enter, inaccessible

• अपि (api) - even, also

• वायुना (vāyunā) - by wind

Words meanings and morphology

वानरैः (vānaraiḥ) - by monkeys

(noun)

Instrumental, masculine, plural of vānara

vānara - monkey, ape

बलवद्भिः (balavadbhiḥ) - by strong ones, by powerful ones

(adjective)

Instrumental, masculine, plural of balavat

balavat - strong, powerful, mighty

Possessive suffix -vat added to bala (strength)

च (ca) - and, also

(indeclinable)

बभूव (babhūva) - became, was

(verb)

3rd person , singular, active, past perfect (lit) of bhū

Root: bhū (class 1)

द्रुमपाणिभिः (drumapāṇibhiḥ) - by those with trees in their hands

(adjective)

Instrumental, masculine, plural of drumapāṇi

drumapāṇi - having trees in hand

Compound type : bahuvrīhi (druma+pāṇi)

• druma – tree
  noun (masculine)
• pāṇi – hand
  noun (masculine)

सर्वतः (sarvataḥ) - from all sides, completely

(indeclinable)

संवृता (saṁvṛtā) - covered, surrounded, enveloped

(adjective)

Nominative, feminine, singular of saṃvṛta

saṁvṛta - covered, surrounded, enveloped

Past Passive Participle

From root vṛ (to cover) with prefix sam

Prefix: sam

Root: vṛ (class 5)

लङ्का (laṅkā) - Lanka (the city of Ravana)

(proper noun)

Nominative, feminine, singular of laṅkā

laṅkā - Lanka (proper noun, capital of Ravana)

दुष्प्रवेशा (duṣpraveśā) - difficult to enter, inaccessible

(adjective)

Nominative, feminine, singular of duṣpraveśa

duṣpraveśa - difficult of access, impenetrable, inaccessible

Compound type : tatpuruṣa (dus+praveśa)

• dus – bad, difficult, ill
  indeclinable
• praveśa – entrance, entry
  noun (masculine)
  Prefix: pra
  Root: viś (class 6)

अपि (api) - even, also

(indeclinable)

वायुना (vāyunā) - by wind

(noun)

Instrumental, masculine, singular of vāyu

vāyu - wind, air, god of wind

Note: Implies extreme impenetrability.