योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-126, verse-20

उत्तरस्तरलास्फालकल्लोले सप्तमाम्बुधौ ।
सहस्रमेकं वर्षाणामुवास मकरोदरे ॥ २० ॥

uttarastaralāsphālakallole saptamāmbudhau ,
sahasramekaṃ varṣāṇāmuvāsa makarodare 20

20. uttaraḥ taralāsphālakallole saptamāmbudhau
sahasram ekam varṣāṇām uvāsa makarodare

20. uttaraḥ taralāsphālakallole saptamāmbudhau
makarodare ekam sahasram varṣāṇām uvāsa

20. The northern son lived for one thousand years in the belly of a sea monster, in the seventh ocean with its surging, crashing waves.

Words meanings summery:

• उत्तरः (uttaraḥ) - the northern son (from a preceding context) (the northern one)

• तरलास्फालकल्लोले (taralāsphālakallole) - in the ocean with surging and crashing waves

• सप्तमाम्बुधौ (saptamāmbudhau) - in the seventh ocean

• सहस्रम् (sahasram) - a thousand

• एकम् (ekam) - one

• वर्षाणाम् (varṣāṇām) - of years

• उवास (uvāsa) - he lived, he resided

• मकरोदरे (makarodare) - in the belly of a sea monster

Words meanings and morphology

उत्तरः (uttaraḥ) - the northern son (from a preceding context) (the northern one)

(adjective)

Nominative, masculine, singular of uttara

uttara - upper, northern, later, subsequent, superior, answering

तरलास्फालकल्लोले (taralāsphālakallole) - in the ocean with surging and crashing waves

(noun)

Locative, masculine, singular of taralāsphālakallola

taralāsphālakallola - waves that are surging and crashing

Compound type : tatpuruṣa (tarala+āsfāla+kallola)

• tarala – trembling, shaking, surging, fluid
  adjective (masculine)
• āsfāla – striking, shaking, crashing, commotion
  noun (masculine)
  Prefix: ā
  Root: sfal (class 1)
• kallola – large wave, surge, billow
  noun (masculine)

Note: Refers to the quality of the 'saptamāmbudhi'.

सप्तमाम्बुधौ (saptamāmbudhau) - in the seventh ocean

(noun)

Locative, masculine, singular of saptamāmbudhi

saptamāmbudhi - the seventh ocean

Compound type : tatpuruṣa (saptama+ambudhi)

• saptama – seventh
  numeral (masculine)
• ambudhi – ocean, sea (literally 'water-holder')
  noun (masculine)

सहस्रम् (sahasram) - a thousand

(numeral)

एकम् (ekam) - one

(numeral)

Note: Agrees with 'sahasram'.

वर्षाणाम् (varṣāṇām) - of years

(noun)

Genitive, neuter, plural of varṣa

varṣa - year, rain, rainy season, cloud

Note: Modifies 'sahasram'.

उवास (uvāsa) - he lived, he resided

(verb)

3rd person , singular, active, perfect (lit) of vas

Root: vas (class 1)

मकरोदरे (makarodare) - in the belly of a sea monster

(noun)

Locative, neuter, singular of makarodara

makarodara - belly of a sea monster/crocodile

Compound type : tatpuruṣa (makara+udara)

• makara – sea monster, crocodile, a mythical aquatic creature
  noun (masculine)
• udara – belly, abdomen, interior
  noun (neuter)