महाभारतः mahābhārataḥ - book-7, chapter-10, verse-19

प्रविश्य मकरावासं यादोभिरभिसंवृतम् ।
जिगाय वरुणं युद्धे सलिलान्तर्गतं पुरा ॥१९॥

19. praviśya makarāvāsaṁ yādobhirabhisaṁvṛtam ,
jigāya varuṇaṁ yuddhe salilāntargataṁ purā.

19. praviśya makarāvāsam yādōbhiḥ abhisaṃvṛtam
jigāya varuṇam yuddhe salilāntargatam purā

19. purā makarāvāsam yādōbhiḥ abhisaṃvṛtam salilāntargatam
(varuṇam) praviśya yuddhe varuṇam jigāya

19. Previously, having entered the abode of marine creatures (makarāvāsa), which was surrounded by aquatic beings, he conquered Varuṇa, who resided within the waters, in battle.

Words meanings summery:

• प्रविश्य (praviśya) - having entered

• मकरावासम् (makarāvāsam) - the abode of marine creatures/crocodiles

• याद्ओभिः (yādōbhiḥ) - by aquatic creatures/monsters

• अभिसंवृतम् (abhisaṁvṛtam) - surrounded, encompassed

• जिगाय (jigāya) - he conquered, he won

• वरुणम् (varuṇam) - Varuṇa (the deity)

• युद्धे (yuddhe) - in battle, in war

• सलिलान्तर्गतम् (salilāntargatam) - residing within the waters

• पुरा (purā) - formerly, previously

Words meanings and morphology

प्रविश्य (praviśya) - having entered

(indeclinable)

Absolutive (gerund)

From prefix pra and root viś (to enter)

Prefix: pra

Root: viś (class 6)

मकरावासम् (makarāvāsam) - the abode of marine creatures/crocodiles

(noun)

Accusative, masculine, singular of makarāvāsa

makarāvāsa - abode of makaras (sea monsters, crocodiles, mythical creatures)

Compound type : tatpurusha (makara+āvāsa)

• makara – sea monster, crocodile, mythical marine creature
  noun (masculine)
• āvāsa – abode, dwelling, residence
  noun (masculine)
  From prefix ā- and root vas (to dwell)
  Prefix: ā
  Root: vas (class 1)

याद्ओभिः (yādōbhiḥ) - by aquatic creatures/monsters

(noun)

Instrumental, neuter, plural of yādas

yādas - aquatic animal, sea monster

अभिसंवृतम् (abhisaṁvṛtam) - surrounded, encompassed

(adjective)

Accusative, neuter, singular of abhisaṃvṛta

abhisaṁvṛta - surrounded, covered, enveloped

Past Passive Participle

From prefix abhi-sam and root vṛ (to cover, surround)

Prefixes: abhi+sam

Root: vṛ (class 5)

जिगाय (jigāya) - he conquered, he won

(verb)

3rd person , singular, active, perfect (liṭ) of ji

Root: ji (class 1)

वरुणम् (varuṇam) - Varuṇa (the deity)

(proper noun)

Accusative, masculine, singular of varuṇa

varuṇa - Varuṇa (Vedic deity of cosmic order, waters)

युद्धे (yuddhe) - in battle, in war

(noun)

Locative, neuter, singular of yuddha

yuddha - battle, fight, war

सलिलान्तर्गतम् (salilāntargatam) - residing within the waters

(adjective)

Accusative, masculine, singular of salilāntargata

salilāntargata - situated or contained within water

Compound type : tatpurusha (salila+antargata)

• salila – water
  noun (neuter)
• antargata – contained within, gone inside
  adjective (masculine)
  Past Passive Participle
  From antar-gam
  Prefix: antar
  Root: gam (class 1)

पुरा (purā) - formerly, previously

(indeclinable)