योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-109, verse-18

उन्मुक्तभुजमास्तां तावलक्षस्थितलोचनम् ।
घनानन्दक्षणं स्थित्वा तूष्णीं प्रणयपेशलम् ॥ १८ ॥

unmuktabhujamāstāṃ tāvalakṣasthitalocanam ,
ghanānandakṣaṇaṃ sthitvā tūṣṇīṃ praṇayapeśalam 18

18. unmukta-bhujam āstām tau alakṣa-sthita-locanam
ghana-ānanda-kṣaṇaṃ sthitvā tūṣṇīm praṇaya-peśalam

18. tau unmukta-bhujam alakṣa-sthita-locanam āstām
ghana-ānanda-kṣaṇaṃ tūṣṇīm praṇaya-peśalam sthitvā

18. After remaining for a moment of profound bliss, silent and tender with love, they stayed with loosened arms and their gaze fixed blankly.

Words meanings summery:

• उन्मुक्त-भुजम् (unmukta-bhujam) - with loosened arms

• आस्ताम् (āstām) - they remained, they were

• तौ (tau) - those two

• अलक्ष-स्थित-लोचनम् (alakṣa-sthita-locanam) - with a gaze fixed blankly, eyes fixed without perceiving (with unseeing eyes, eyes fixed on nothing)

• घन-आनन्द-क्षणं (ghana-ānanda-kṣaṇaṁ) - for a moment of intense bliss

• स्थित्वा (sthitvā) - having remained, having stood

• तूष्णीम् (tūṣṇīm) - silently, quietly

• प्रणय-पेशलम् (praṇaya-peśalam) - tender with love, beautiful due to love

Words meanings and morphology

उन्मुक्त-भुजम् (unmukta-bhujam) - with loosened arms

(adjective)

Accusative, neuter, singular of unmukta-bhuja

unmukta-bhuja - having loosened arms, with released embrace

Compound type : bahuvrīhi (unmukta+bhuja)

• unmukta – released, loosened, abandoned
  adjective (masculine)
  Past Passive Participle
  Derived from root `muc` (to release) with prefix `ud`.
  Prefix: ud
  Root: muc (class 6)
• bhuja – arm, hand, curve
  noun (masculine)

आस्ताम् (āstām) - they remained, they were

(verb)

3rd person , dual, active, past imperfect (laṅ) of ās

Imperfect Indicative

Laṅ (Imperfect) third person dual active form.

Root: ās (class 2)

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

अलक्ष-स्थित-लोचनम् (alakṣa-sthita-locanam) - with a gaze fixed blankly, eyes fixed without perceiving (with unseeing eyes, eyes fixed on nothing)

(adjective)

Accusative, neuter, singular of alakṣa-sthita-locana

alakṣa-sthita-locana - having eyes fixed on nothing discernible, with an unseeing gaze

Compound type : bahuvrīhi (a+lakṣa+sthita+locana)

• a – not, un-, non-
  indeclinable
• lakṣa – mark, sign, object, target, perception
  noun (neuter)
• sthita – situated, standing, fixed, remaining
  adjective (masculine)
  Past Passive Participle
  Derived from root `sthā` (to stand).
  Root: sthā (class 1)
• locana – eye, seeing
  noun (neuter)

घन-आनन्द-क्षणं (ghana-ānanda-kṣaṇaṁ) - for a moment of intense bliss

(noun)

Accusative, masculine, singular of ghana-ānanda-kṣaṇa

ghana-ānanda-kṣaṇa - a moment of dense/intense bliss/joy

Compound type : tatpuruṣa (ghana+ānanda+kṣaṇa)

• ghana – dense, thick, intense, solid
  adjective (masculine)
• ānanda – bliss, joy, delight, happiness
  noun (masculine)
• kṣaṇa – moment, instant, a brief period of time
  noun (masculine)

स्थित्वा (sthitvā) - having remained, having stood

(indeclinable)

Absolutive / Gerund

Derived from root `sthā` (to stand, remain).

Root: sthā (class 1)

तूष्णीम् (tūṣṇīm) - silently, quietly

(indeclinable)

प्रणय-पेशलम् (praṇaya-peśalam) - tender with love, beautiful due to love

(adjective)

Accusative, neuter, singular of praṇaya-peśala

praṇaya-peśala - delicate/beautiful/tender with love or affection

Compound type : tatpuruṣa (praṇaya+peśala)

• praṇaya – love, affection, devotion, regard
  noun (masculine)
• peśala – delicate, tender, beautiful, charming, skillful
  adjective (masculine)