योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-66, verse-13

द्वीपाब्धिशैलैर्भूपीठं विमाननगरैर्नभः ।
देत्यदानवनागौघैः पूर्णं पातालमण्डलम् ॥ १३ ॥

dvīpābdhiśailairbhūpīṭhaṃ vimānanagarairnabhaḥ ,
detyadānavanāgaughaiḥ pūrṇaṃ pātālamaṇḍalam 13

13. dvīpābdhiśailaiḥ bhūpīṭham vimānanagaraiḥ nabhaḥ
daityadānavanāgaughaiḥ pūrṇam pātālamaṇḍalam

13. bhūpīṭham dvīpābdhiśailaiḥ (pūrṇam); nabhaḥ vimānanagaraiḥ
(pūrṇam); pātālamaṇḍalam daityadānavanāgaughaiḥ pūrṇam

13. The earth's surface (bhūpīṭha) is filled with islands, oceans, and mountains. The sky (nabhas) is filled with celestial palaces (vimana) and cities. The realm of Pātāla is filled with hosts of Daityas, Dānavas, and Nāgas.

Words meanings summery:

• द्वीपाब्धिशैलैः (dvīpābdhiśailaiḥ) - by islands, oceans, and mountains

• भूपीठम् (bhūpīṭham) - earth's surface, the platform of the earth

• विमाननगरैः (vimānanagaraiḥ) - by celestial palaces and cities

• नभः (nabhaḥ) - sky, atmosphere, heaven

• दैत्यदानवनागौघैः (daityadānavanāgaughaiḥ) - by multitudes of Daityas, Dānavas, and Nāgas

• पूर्णम् (pūrṇam) - full, complete, filled

• पातालमण्डलम् (pātālamaṇḍalam) - the region of Pātāla, the netherworld

Words meanings and morphology

द्वीपाब्धिशैलैः (dvīpābdhiśailaiḥ) - by islands, oceans, and mountains

(noun)

Instrumental, masculine, plural of dvīpābdhiśaila

dvīpābdhiśaila - islands, oceans, and mountains

Compound type : dvandva (dvīpa+abdhi+śaila)

• dvīpa – island, continent
  noun (masculine)
• abdhi – ocean, sea
  noun (masculine)
• śaila – mountain, rock
  noun (masculine)

भूपीठम् (bhūpīṭham) - earth's surface, the platform of the earth

(noun)

Nominative, neuter, singular of bhūpīṭha

bhūpīṭha - earth's surface, ground, earth-platform

Compound type : tatpuruṣa (bhū+pīṭha)

• bhū – earth, ground
  noun (feminine)
• pīṭha – seat, stool, pedestal, platform
  noun (neuter)

विमाननगरैः (vimānanagaraiḥ) - by celestial palaces and cities

(noun)

Instrumental, neuter, plural of vimānanagara

vimānanagara - celestial palaces and cities, cities of aerial cars

Compound type : dvandva (vimāna+nagara)

• vimāna – celestial car or palace, aerial car, temple
  noun (neuter)
• nagara – city, town
  noun (neuter)

नभः (nabhaḥ) - sky, atmosphere, heaven

(noun)

Nominative, neuter, singular of nabhas

nabhas - sky, atmosphere, heaven, ether

दैत्यदानवनागौघैः (daityadānavanāgaughaiḥ) - by multitudes of Daityas, Dānavas, and Nāgas

(noun)

Instrumental, masculine, plural of daityadānavanāgaugha

daityadānavanāgaugha - multitude of Daityas, Dānavas, and Nāgas

Compound type : tatpuruṣa/dvandva (daitya+dānava+nāga+ogha)

• daitya – a class of demons, sons of Diti
  noun (masculine)
• dānava – a class of demons, sons of Danu
  noun (masculine)
• nāga – serpent-demon, cobra, elephant
  noun (masculine)
• ogha – flood, multitude, heap, mass
  noun (masculine)

पूर्णम् (pūrṇam) - full, complete, filled

(adjective)

Nominative, neuter, singular of pūrṇa

pūrṇa - full, complete, fulfilled, filled with

Past Passive Participle

Derived from root 'pṛ' (to fill) + 'kta' (past passive participle suffix)

Root: pṛ (class 9)

पातालमण्डलम् (pātālamaṇḍalam) - the region of Pātāla, the netherworld

(noun)

Nominative, neuter, singular of pātālamaṇḍala

pātālamaṇḍala - the realm/region of Pātāla (the lowest world)

Compound type : tatpuruṣa (pātāla+maṇḍala)

• pātāla – the netherworld, one of the seven lower regions
  proper noun (neuter)
• maṇḍala – circle, disk, region, sphere, realm
  noun (neuter)