योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-137, verse-21

रसनादपरैर्नाडीमार्गविद्याधराध्वगैः ।
संचरद्भिर्वृतं वातैराकारार्धार्धगीतिभिः ॥ २१ ॥

rasanādaparairnāḍīmārgavidyādharādhvagaiḥ ,
saṃcaradbhirvṛtaṃ vātairākārārdhārdhagītibhiḥ 21

21. rasanāda aparaiḥ nāḍīmārgavidyādharādhvagaiḥ
sañcaradbhiḥ vṛtam vātaiḥ ākārārdhārdhagītibhiḥ

21. vātaiḥ sañcaradbhiḥ rasanāda aparaiḥ
nāḍīmārgavidyādharādhvagaiḥ ākārārdhārdhagītibhiḥ vṛtam

21. (The implied subject is) filled by vital airs (vāyu) that are moving (sañcaradbhiḥ), whose sounds are distinct from mere tongue-noises, travelling through the paths of channels (nāḍī-mārga) like Vidyādharas, and which produce sounds like fragmented, indistinct melodies.

Words meanings summery:

• रसनाद (rasanāda) - sound of tasting, sound of the tongue, roar, noise

• अपरैः (aparaiḥ) - distinct from (tongue-noises) (by others, by different ones, distinct from)

• नाडीमार्गविद्याधराध्वगैः (nāḍīmārgavidyādharādhvagaiḥ) - by vital airs (vāyu) travelling through the paths of channels like Vidyādharas (by those who travel through the paths of channels like Vidyādharas)

• सञ्चरद्भिः (sañcaradbhiḥ) - by those moving, by moving ones, by circulating ones

• वृतम् (vṛtam) - surrounded, encompassed, filled, covered

• वातैः (vātaiḥ) - by the winds, by the vital airs (vāyu)

• आकारार्धार्धगीतिभिः (ākārārdhārdhagītibhiḥ) - by those producing sounds like fragmented, indistinct melodies

Words meanings and morphology

रसनाद (rasanāda) - sound of tasting, sound of the tongue, roar, noise

(noun)

masculine, singular of rasanāda

rasanāda - sound of the tongue, tasting sound, roar, noise

Compound type : tatpuruṣa (rasanā+nāda)

• rasanā – tongue, sense of taste
  noun (feminine)
• nāda – sound, roar, cry
  noun (masculine)

Note: This is part of the 'rasanāda aparaiḥ' structure, where 'rasanāda' acts as a base for comparison or distinction for 'aparaiḥ'.

अपरैः (aparaiḥ) - distinct from (tongue-noises) (by others, by different ones, distinct from)

(adjective)

Instrumental, masculine, plural of apara

apara - other, different, subsequent, inferior

Note: Agrees with vātaiḥ. 'rasanāda aparaiḥ' means 'by those (vāyus) whose sound is other than a rasanāda'.

नाडीमार्गविद्याधराध्वगैः (nāḍīmārgavidyādharādhvagaiḥ) - by vital airs (vāyu) travelling through the paths of channels like Vidyādharas (by those who travel through the paths of channels like Vidyādharas)

(adjective)

Instrumental, masculine, plural of nāḍīmārgavidyādharādhvaga

nāḍīmārgavidyādharādhvaga - traveler on the path of channels like a Vidyādhara

Compound type : tatpuruṣa (nāḍī+mārga+vidyādhara+adhvaga)

• nāḍī – channel, tube, nerve, pulse, artery, vein
  noun (feminine)
• mārga – path, road, way, course, channel
  noun (masculine)
• vidyādhara – a class of semi-divine beings, knowledge-bearer, sorcerer
  noun (masculine)
• adhvaga – traveler, wayfarer, moving along the path
  noun (masculine)

Note: Agrees with vātaiḥ. Implies swift, subtle movement through internal channels.

सञ्चरद्भिः (sañcaradbhiḥ) - by those moving, by moving ones, by circulating ones

(adjective)

Instrumental, masculine, plural of sañcarat

sañcarat - moving, circulating, wandering

Present Active Participle

Derived from root car with prefix sam

Prefix: sam

Root: car (class 1)

Note: Agrees with vātaiḥ.

वृतम् (vṛtam) - surrounded, encompassed, filled, covered

(adjective)

Nominative, neuter, singular of vṛta

vṛta - surrounded, encompassed, filled, covered

Past Passive Participle

Derived from root vṛ (class 5)

Root: vṛ (class 5)

Note: Agrees with an implied neuter singular subject.

वातैः (vātaiḥ) - by the winds, by the vital airs (vāyu)

(noun)

Instrumental, masculine, plural of vāyu

vāyu - wind, air, vital air (prāṇa)

Note: The primary agent of vṛtam.

आकारार्धार्धगीतिभिः (ākārārdhārdhagītibhiḥ) - by those producing sounds like fragmented, indistinct melodies

(adjective)

Instrumental, masculine, plural of ākārārdhārdhagīti

ākārārdhārdhagīti - having sounds like half-broken melodies

Compound type : bahuvrīhi (ākāra+ardha+ardha+gīti)

• ākāra – form, shape, appearance, expression, sound
  noun (masculine)
• ardha – half, part
  noun (neuter)
• ardha – half, part
  noun (neuter)
• gīti – song, melody, singing, sound
  noun (feminine)

Note: Agrees with vātaiḥ. Ardhārdha indicates fragmentation or indistinctness.