योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-89, verse-3

वज्रार्चिर्विषमौ दीर्घौ तस्यास्तां दशनौ सितौ ।
कल्पानलशिखातुल्यौ सुमेरून्मूलनक्षमौ ॥ ३ ॥

vajrārcirviṣamau dīrghau tasyāstāṃ daśanau sitau ,
kalpānalaśikhātulyau sumerūnmūlanakṣamau 3

3. vajrārcis viṣamau dīrghau tasya āstām daśanau
sitau kalpānalaśikhātulyau sumerūnmūlanakṣamau

3. tasya dīrghau sitau viṣamau daśanau vajrārcis
kalpānalaśikhātulyau sumerūnmūlanakṣamau āstām

3. His two tusks were long, white, and formidable, resembling the flames of a thunderbolt. They were like the flames of the cosmic fire of dissolution, capable of uprooting Mount Sumeru.

Words meanings summery:

• वज्रार्चिस् (vajrārcis) - flame of a thunderbolt

• विषमौ (viṣamau) - formidable, uneven, terrible

• दीर्घौ (dīrghau) - long

• तस्य (tasya) - his

• आस्ताम् (āstām) - they were

• दशनौ (daśanau) - two tusks

• सितौ (sitau) - white

• कल्पानलशिखातुल्यौ (kalpānalaśikhātulyau) - similar to the flames of the cosmic fire of dissolution

• सुमेरून्मूलनक्षमौ (sumerūnmūlanakṣamau) - capable of uprooting Mount Sumeru

Words meanings and morphology

वज्रार्चिस् (vajrārcis) - flame of a thunderbolt

(noun)

of vajrārcis

vajrārcis - flame of lightning/thunderbolt

Compound type : tatpuruṣa (vajra+arcis)

• vajra – thunderbolt, diamond
  noun (masculine)
• arcis – flame, ray, light
  noun (neuter)
  Root: ṛc (class 1)

Note: Used adjectivally in comparison.

विषमौ (viṣamau) - formidable, uneven, terrible

(adjective)

Nominative, masculine, dual of viṣama

viṣama - uneven, difficult, formidable, terrible

दीर्घौ (dīrghau) - long

(adjective)

Nominative, masculine, dual of dīrgha

dīrgha - long, tall

तस्य (tasya) - his

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, it

आस्ताम् (āstām) - they were

(verb)

3rd person , dual, active, imperfect (laṅ) of as

Root: as (class 2)

दशनौ (daśanau) - two tusks

(noun)

Nominative, masculine, dual of daśana

daśana - tooth, tusk

Root: daṃś (class 1)

सितौ (sitau) - white

(adjective)

Nominative, masculine, dual of sita

sita - white, pale, tied, bound

Past Passive Participle

Derived from root 'si' (to bind) or 'śvit' (to be white). Here, 'white'.

Root: śvit (class 1)

कल्पानलशिखातुल्यौ (kalpānalaśikhātulyau) - similar to the flames of the cosmic fire of dissolution

(adjective)

Nominative, masculine, dual of kalpānalaśikhātulya

kalpānalaśikhātulya - similar to the flames of the fire at the end of a cosmic age

Compound type : tatpuruṣa (kalpa+anala+śikhā+tulya)

• kalpa – cosmic epoch, eon
  noun (masculine)
  Root: kḷp (class 1)
• anala – fire
  noun (masculine)
• śikhā – flame, crest
  noun (feminine)
• tulya – similar, equal, like
  adjective
  Root: tul (class 1)

सुमेरून्मूलनक्षमौ (sumerūnmūlanakṣamau) - capable of uprooting Mount Sumeru

(adjective)

Nominative, masculine, dual of sumerūnmūlanakṣama

sumerūnmūlanakṣama - capable of uprooting Mount Sumeru

Compound type : tatpuruṣa (sumeru+unmūlana+kṣama)

• sumeru – Mount Sumeru (mythical mountain)
  proper noun (masculine)
• unmūlana – uprooting, eradication
  noun (neuter)
  Prefix: ud
  Root: mūl (class 10)
• kṣama – capable, able, fit
  adjective
  Root: kṣam (class 1)