योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-4, verse-16

शेखरोत्सङ्गविश्रान्तप्रबुद्धमधुपस्वनैः ।
सघुंघुमशिरोभारा वदद्भिरिव मूर्धजैः ॥ १६ ॥

śekharotsaṅgaviśrāntaprabuddhamadhupasvanaiḥ ,
saghuṃghumaśirobhārā vadadbhiriva mūrdhajaiḥ 16

16. śekharotsaṅgaviśrāntaprabuddhamadhupasvanaiḥ
saghuṅghumaśirobhārā vadadbhiḥ iva mūrdhajaiḥ

16. mūrdhajaiḥ saghuṅghumaśirobhārā
śekharotsaṅgaviśrāntaprabuddhamadhupasvanaiḥ vadadbhiḥ iva

16. With their hair, heavy on the head and accompanied by the humming sounds of awakened bees resting on their ornamental crowns, as if the hair itself was speaking.

Words meanings summery:

• शेखरोत्सङ्गविश्रान्तप्रबुद्धमधुपस्वनैः (śekharotsaṅgaviśrāntaprabuddhamadhupasvanaiḥ) - by the sounds of the awakened bees resting among the ornamental crowns (in the women's hair) (by the sounds of awakened bees resting in the lap of the crests/crowns)

• सघुङ्घुमशिरोभारा (saghuṅghumaśirobhārā) - (hair) heavy on the head and accompanied by a humming sound (from bees) (with a humming, heavy burden on the head; having a heavy, humming head-dress)

• वदद्भिः (vadadbhiḥ) - as if speaking (referring to the hair) (by speaking, by uttering)

• इव (iva) - as if (as if, like, in the manner of)

• मूर्धजैः (mūrdhajaiḥ) - by their hair (by the hairs)

Words meanings and morphology

शेखरोत्सङ्गविश्रान्तप्रबुद्धमधुपस्वनैः (śekharotsaṅgaviśrāntaprabuddhamadhupasvanaiḥ) - by the sounds of the awakened bees resting among the ornamental crowns (in the women's hair) (by the sounds of awakened bees resting in the lap of the crests/crowns)

(noun)

Instrumental, masculine, plural of śekharotsaṅgaviśrāntaprabuddhamadhupasvana

śekharotsaṅgaviśrāntaprabuddhamadhupasvana - the sound of awakened bees resting on the crests

Compound type : tatpurusha (śekhara+utsaṅga+viśrānta+prabuddha+madhupa+svana)

• śekhara – crest, crown, chaplet, summit
  noun (masculine)
• utsaṅga – lap, bosom, embrace, close contact, fold, part
  noun (masculine)
  Prefix: ut
• viśrānta – rested, reposed, ceased, calm
  adjective (masculine)
  Past Passive Participle
  from vi-√śram (to rest)
  Prefix: vi
  Root: śram (class 1)
• prabuddha – awakened, aroused, conscious, developed
  adjective (masculine)
  Past Passive Participle
  from pra-√budh (to awaken)
  Prefix: pra
  Root: budh (class 1)
• madhupa – bee (lit. honey-drinker)
  noun (masculine)
  Compound: madhu-pa (drinking honey)
• svana – sound, noise, roar, hum
  noun (masculine)

Note: A complex compound describing the source of sounds.

सघुङ्घुमशिरोभारा (saghuṅghumaśirobhārā) - (hair) heavy on the head and accompanied by a humming sound (from bees) (with a humming, heavy burden on the head; having a heavy, humming head-dress)

(adjective)

Instrumental, masculine, plural of saghuṅghumaśirobhāra

saghuṅghumaśirobhāra - having a heavy head-dress with humming sounds

Bahuvrihi compound: sa (with) + ghuṅghuma (humming) + śiras (head) + bhāra (burden)

Compound type : bahuvrihi (sa+ghuṅghuma+śiras+bhāra)

• sa – with, accompanied by
  indeclinable
• ghuṅghuma – humming, buzzing sound
  noun (masculine)
• śiras – head
  noun (neuter)
• bhāra – burden, weight, load
  noun (masculine)

Note: Likely poetic license for saghuṅghumaśirobhāraiḥ, agreeing with mūrdhajaiḥ.

वदद्भिः (vadadbhiḥ) - as if speaking (referring to the hair) (by speaking, by uttering)

(adjective)

Instrumental, masculine, plural of vadat

vadat - speaking, saying

Present Active Participle

from √vad (to speak)

Root: vad (class 1)

Note: Modifies mūrdhajaiḥ.

इव (iva) - as if (as if, like, in the manner of)

(indeclinable)

मूर्धजैः (mūrdhajaiḥ) - by their hair (by the hairs)

(noun)

Instrumental, masculine, plural of mūrdhaja

mūrdhaja - hair (lit. born from the head)

Compound: mūrdhan (head) + ja (born)

Compound type : tatpurusha (mūrdhan+ja)

• mūrdhan – head, top, summit
  noun (masculine)
• ja – born, produced from
  adjective (masculine)
  From root √jan (to be born)
  Root: jan (class 4)