योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-39, verse-29

कबन्धकन्धराबन्धव्यग्रवेतालबालकम् ।
यक्षरक्षःपिशाचादिकचदाकाशगोल्मुकम् ॥ २९ ॥

kabandhakandharābandhavyagravetālabālakam ,
yakṣarakṣaḥpiśācādikacadākāśagolmukam 29

29. kabandhakandharābandhavyagravetālabālakam
yakṣarakṣaḥpiśācādikacadākāśagolmukam

29. kabandhakandharābandhavyagravetālabālakam
yakṣarakṣaḥpiśācādikacadākāśagolmukam

29. It was a scene featuring young vetālas (vetāla) diligently fastening necks to headless trunks (kabandha), and Yakṣas, Rakṣas (rakṣas), Piśācas, and other such beings glittering in the sky like firebrands (golmuka).

Words meanings summery:

• कबन्धकन्धराबन्धव्यग्रवेतालबालकम् (kabandhakandharābandhavyagravetālabālakam) - young vetālas busy with binding necks to headless trunks

• यक्षरक्षःपिशाचादिकचदाकाशगोल्मुकम् (yakṣarakṣaḥpiśācādikacadākāśagolmukam) - glittering firebrands in the sky, (formed by) Yakṣas, Rakṣas, Piśācas, etc.

Words meanings and morphology

कबन्धकन्धराबन्धव्यग्रवेतालबालकम् (kabandhakandharābandhavyagravetālabālakam) - young vetālas busy with binding necks to headless trunks

(noun)

Accusative, masculine, singular of kabandhakandharābandhavyagravetālabālaka

kabandhakandharābandhavyagravetālabālaka - young vetāla busy with binding necks to headless trunks

Compound type : tatpurusha (kabandha+kandharā+bandha+vyagra+vetāla+bālaka)

• kabandha – headless trunk, torso
  noun (masculine)
• kandharā – neck, throat
  noun (feminine)
• bandha – binding, tying, fetter, connection
  noun (masculine)
  From bandh (to bind), suffix a.
  Root: bandh (class 9)
• vyagra – agitated, engrossed, busy, intent on
  adjective
  From agra with vi.
  Prefix: vi
• vetāla – demon, ghost, vampire-like being
  noun (masculine)
• bālaka – child, young one, boy
  noun (masculine)

Note: The final am suggests it qualifies an implied neuter noun.

यक्षरक्षःपिशाचादिकचदाकाशगोल्मुकम् (yakṣarakṣaḥpiśācādikacadākāśagolmukam) - glittering firebrands in the sky, (formed by) Yakṣas, Rakṣas, Piśācas, etc.

(noun)

Accusative, neuter, singular of yakṣarakṣaḥpiśācādikacadākāśagolmuka

yakṣarakṣaḥpiśācādikacadākāśagolmuka - glittering firebrand in the sky, (formed by) Yakṣas, Rakṣas, Piśācas, etc.

Compound type : karmadhāraya (yakṣa+rakṣas+piśāca+ādi+kacat+ākāśa+golmuka)

• yakṣa – a class of semi-divine beings, guardians of wealth
  noun (masculine)
• rakṣas – demon, evil spirit, giant
  noun (neuter)
• piśāca – ghoul, flesh-eating demon
  noun (masculine)
• ādi – beginning, starting with, etcetera
  indeclinable
• kacat – shining, glittering, sparkling
  adjective
  Present Active Participle
  From kac (to shine), suffix śatṛ.
  Root: kac (class 1)
• ākāśa – sky, space, ether
  noun (masculine)
• golmuka – firebrand, meteor, flaming torch
  noun (neuter)

Note: The final am suggests it qualifies an implied neuter noun.