योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-81, verse-63

मांसं कुयन्त्रजठरे स्थितं श्लिष्टमुखं मिथः ।
ऊर्ध्वाधःसंमिलत्स्थूलद्ध्यम्भःस्थैरिव वैतसम् ॥ ६३ ॥

māṃsaṃ kuyantrajaṭhare sthitaṃ śliṣṭamukhaṃ mithaḥ ,
ūrdhvādhaḥsaṃmilatsthūladdhyambhaḥsthairiva vaitasam 63

63. māṃsam kuyantrajathare sthitam śliṣṭamukham mithaḥ
ūrdhvādhaḥsaṃmilatsthūladvyambhaḥsthaiḥ iva vaitasam

63. māṃsam kuyantrajathare sthitam mithaḥ śliṣṭamukham
iva ūrdhvādhaḥsaṃmilatsthūladvyambhaḥsthaiḥ vaitasam

63. Flesh, situated within the interior of a complex apparatus, with its surfaces mutually joined, (is transformed) like a piece of cane (vaitasa) whose thick, twin parts, meeting both above and below, are situated in water.

Words meanings summery:

• मांसम् (māṁsam) - flesh, meat, muscle

• कुयन्त्रजथरे (kuyantrajathare) - in the belly/interior of a complex/bad machine

• स्थितम् (sthitam) - situated, placed, existing

• श्लिष्टमुखम् (śliṣṭamukham) - having mutually joined surfaces/mouths

• मिथः (mithaḥ) - mutually, together, reciprocally

• ऊर्ध्वाधःसंमिलत्स्थूलद्व्यम्भःस्थैः (ūrdhvādhaḥsaṁmilatsthūladvyambhaḥsthaiḥ) - by two thick ones meeting up and down, situated in water

• इव (iva) - like, as, as if

• वैतसम् (vaitasam) - a piece of cane/willow, made of cane

Words meanings and morphology

मांसम् (māṁsam) - flesh, meat, muscle

(noun)

Nominative, neuter, singular of māṃsa

māṁsa - flesh, meat, muscle, pulp

Note: Subject of the implied verb 'is'.

कुयन्त्रजथरे (kuyantrajathare) - in the belly/interior of a complex/bad machine

(noun)

Locative, neuter, singular of kuyantrajathara

kuyantrajathara - interior of a bad/complex machine

Compound type : tatpuruṣa (kuyantra+jaṭhara)

• kuyantra – bad machine, complex device, difficult contrivance
  noun (neuter)
  From 'ku' (bad) + 'yantra' (machine).
• jaṭhara – belly, abdomen, interior, inside
  noun (neuter)

Note: Indicates location.

स्थितम् (sthitam) - situated, placed, existing

(adjective)

Nominative, neuter, singular of sthita

sthita - stood, stood still, existing, remaining, established, situated

Past Passive Participle

Derived from root 'sthā' (to stand) + kta (passive participle suffix).

Root: sthā (class 1)

Note: Can also be accusative singular neuter.

श्लिष्टमुखम् (śliṣṭamukham) - having mutually joined surfaces/mouths

(adjective)

Nominative, neuter, singular of śliṣṭamukha

śliṣṭamukha - having joined mouths/faces/edges, adhering at the surfaces

Compound type : bahuvrīhi (śliṣṭa+mukha)

• śliṣṭa – joined, adhering, embraced
  adjective (masculine)
  Past Passive Participle
  Derived from root 'śliṣ' (to cling, to join) + kta (passive participle suffix).
  Root: śliṣ (class 1)
• mukha – mouth, face, surface, front
  noun (neuter)

Note: Adjective for 'māṃsam'.

मिथः (mithaḥ) - mutually, together, reciprocally

(indeclinable)

ऊर्ध्वाधःसंमिलत्स्थूलद्व्यम्भःस्थैः (ūrdhvādhaḥsaṁmilatsthūladvyambhaḥsthaiḥ) - by two thick ones meeting up and down, situated in water

(adjective)

Instrumental, masculine, plural of ūrdhvādhaḥsaṃmilatsthūladvyambhaḥstha

ūrdhvādhaḥsaṁmilatsthūladvyambhaḥstha - (those) whose thick twin parts, meeting from above and below, are situated in water

Extensive Bahuvrīhi or Tatpuruṣa compound.

Compound type : bahuvrīhi (ūrdhvādhaḥsaṃmilat+sthūla+dvi+ambhaḥstha)

• ūrdhvādhaḥsaṃmilat – meeting above and below
  adjective (masculine)
  Present Active Participle
  From 'ūrdhva' (up) + 'adhaḥ' (down) + 'sam' (together) + 'mil' (to meet) + śatṛ suffix.
  Prefix: sam
  Root: mil (class 6)
• sthūla – thick, gross, large
  adjective (masculine)
• dvi – two
  numeral
• ambhaḥstha – situated in water, standing in water
  adjective (masculine)
  From 'ambhas' (water) + 'stha' (standing).
  Root: sthā (class 1)

Note: Describes the characteristic parts of the 'vaitasam' in the simile, implying the manner of transformation.

इव (iva) - like, as, as if

(indeclinable)

वैतसम् (vaitasam) - a piece of cane/willow, made of cane

(adjective)

Nominative, neuter, singular of vaitasa

vaitasa - made of cane/willow, a cane/willow rod or branch

Derived from 'vetasa' (cane, willow) with suffix 'aṇ'.

Note: Can also be accusative singular neuter.