योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-15, verse-18

गौरीरक्षितबर्हौघान्कौमारान्वरबर्हिणः ।
स्कन्दोपन्यस्तनिःशेषशैवविज्ञानकोविदान् ॥ १८ ॥

gaurīrakṣitabarhaughānkaumārānvarabarhiṇaḥ ,
skandopanyastaniḥśeṣaśaivavijñānakovidān 18

18. gaurīrakṣitabarhaughān kaumārān varabarhiṇaḥ
skandopanyastaniḥśeṣaśaivavijñānakovidān

18. varabarhiṇaḥ gaurīrakṣitabarhaughān kaumārān
skandopanyastaniḥśeṣaśaivavijñānakovidān

18. These were excellent peacocks, whose abundant plumes were protected by Gaurī, who belonged to Kumāra (Skanda), and who were proficient in the complete Śaiva knowledge imparted by Skanda himself.

Words meanings summery:

• गौरीरक्षितबर्हौघान् (gaurīrakṣitabarhaughān) - whose heaps of feathers are protected by Gaurī

• कौमारान् (kaumārān) - belonging to Kumāra (Skanda); relating to Kumāra

• वरबर्हिणः (varabarhiṇaḥ) - excellent peacocks

• स्कन्दोपन्यस्तनिःशेषशैवविज्ञानकोविदान् (skandopanyastaniḥśeṣaśaivavijñānakovidān) - skilled in the complete Śaiva knowledge taught by Skanda

Words meanings and morphology

गौरीरक्षितबर्हौघान् (gaurīrakṣitabarhaughān) - whose heaps of feathers are protected by Gaurī

(adjective)

Accusative, masculine, plural of gaurīrakṣitabarhaugha

gaurīrakṣitabarhaugha - whose multitude of feathers is protected by Gaurī

Compound type : bahuvrihi (gaurī+rakṣita+barhaugha)

• gaurī – Gaurī (a name of Pārvatī)
  proper noun (feminine)
• rakṣita – protected, guarded
  adjective (masculine)
  Past Passive Participle
  Derived from `√rakṣ` (to protect).
  Root: rakṣ (class 1)
• barhaugha – multitude/heap of feathers/plumes
  noun (masculine)

कौमारान् (kaumārān) - belonging to Kumāra (Skanda); relating to Kumāra

(adjective)

Accusative, masculine, plural of kaumāra

kaumāra - of or belonging to Kumāra (Skanda); youthful

Derived from `kumāra` (youth, boy, Skanda).

वरबर्हिणः (varabarhiṇaḥ) - excellent peacocks

(noun)

Accusative, masculine, plural of varabarhiṇ

varabarhiṇ - excellent peacock

Compound type : karmadharaya (vara+barhiṇ)

• vara – excellent, best, noble
  adjective (masculine)
• barhiṇ – peacock
  noun (masculine)

स्कन्दोपन्यस्तनिःशेषशैवविज्ञानकोविदान् (skandopanyastaniḥśeṣaśaivavijñānakovidān) - skilled in the complete Śaiva knowledge taught by Skanda

(adjective)

Accusative, masculine, plural of skandopanyastaniḥśeṣaśaivavijñānakovida

skandopanyastaniḥśeṣaśaivavijñānakovida - skilled in the entire Śaiva knowledge presented/taught by Skanda

Compound type : bahuvrihi (skanda+upanyasta+niḥśeṣa+śaivavijñāna+kovida)

• skanda – Skanda (Kartikeya), the god of war
  proper noun (masculine)
• upanyasta – presented, taught, explained
  adjective (masculine)
  Past Passive Participle
  Derived from `upa-ni-√as` (to present, to teach).
  Prefixes: upa+ni
  Root: as (class 4)
• niḥśeṣa – complete, entire, without remainder
  adjective (masculine)
  Compound of `nis-` (without) and `śeṣa` (remainder).
  Prefix: nis
• śaivavijñāna – Śaiva knowledge, knowledge pertaining to Śiva
  noun (neuter)
• kovida – skilled, expert, learned
  adjective (masculine)