वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-57, verse-81

अङ्गदस्य वचः श्रुत्वा प्रचुक्रोध नरान्तकः ।
संदश्य दशनैरोष्ठं निश्वस्य च भुजंगवत् ॥८१॥

81. aṅgadasya vacaḥ śrutvā pracukrodha narāntakaḥ ,
saṃdaśya daśanairoṣṭhaṃ niśvasya ca bhujaṃgavat.

81. aṅgadasya vacaḥ śrutvā pracukrodha narāntakaḥ
saṃdaśya daśanaiḥ oṣṭham niśvasya ca bhujaṃgavat

81. narāntakaḥ aṅgadasya vacaḥ śrutvā daśanaiḥ oṣṭham
saṃdaśya ca bhujaṃgavat niśvasya pracukrodha

81. Hearing Angada's words, Narāntaka became enraged. Biting his lip with his teeth and hissing like a serpent, he (became enraged).

Words meanings summery:

• अङ्गदस्य (aṅgadasya) - of Angada

• वचः (vacaḥ) - word, speech, statement

• श्रुत्वा (śrutvā) - having heard

• प्रचुक्रोध (pracukrodha) - became very angry, was enraged

• नरान्तकः (narāntakaḥ) - the Rākṣasa named Narāntaka (Narāntaka (a Rākṣasa))

• संदश्य (saṁdaśya) - having bitten his lip (having bitten, having clenched (teeth))

• दशनैः (daśanaiḥ) - with teeth

• ओष्ठम् (oṣṭham) - lip

• निश्वस्य (niśvasya) - having hissed, having sighed, having breathed out

• च (ca) - and

• भुजंगवत् (bhujaṁgavat) - like a serpent

Words meanings and morphology

अङ्गदस्य (aṅgadasya) - of Angada

(proper noun)

Genitive, masculine, singular of aṅgada

aṅgada - Angada (a proper noun, son of Vāli)

वचः (vacaḥ) - word, speech, statement

(noun)

Accusative, neuter, singular of vacas

vacas - word, speech, saying, statement

Note: Can also be nominative singular or accusative plural of a different declension, but neuter accusative singular seems most fitting here for 'a statement'.

श्रुत्वा (śrutvā) - having heard

(indeclinable)

absolutive (gerund)

root śru + suffix ktvā

Root: śru (class 5)

प्रचुक्रोध (pracukrodha) - became very angry, was enraged

(verb)

3rd person , singular, active, perfect (liṭ) of pracruḍh

perfect form of pra + kruḍh

Prefix: pra

Root: kruḍh (class 4)

नरान्तकः (narāntakaḥ) - the Rākṣasa named Narāntaka (Narāntaka (a Rākṣasa))

(proper noun)

Nominative, masculine, singular of narāntaka

narāntaka - destroyer of men, Narāntaka (a proper noun)

Compound type : tatpuruṣa (nara+antaka)

• nara – man, human being
  noun (masculine)
• antaka – ender, destroyer
  noun (masculine)

संदश्य (saṁdaśya) - having bitten his lip (having bitten, having clenched (teeth))

(indeclinable)

absolutive (gerund)

prefix sam + root daṃś + suffix lyap

Prefix: sam

Root: daṃś (class 1)

दशनैः (daśanaiḥ) - with teeth

(noun)

Instrumental, masculine, plural of daśana

daśana - tooth, biting

ओष्ठम् (oṣṭham) - lip

(noun)

Accusative, masculine, singular of oṣṭha

oṣṭha - lip

निश्वस्य (niśvasya) - having hissed, having sighed, having breathed out

(indeclinable)

absolutive (gerund)

prefix nis + root śvas + suffix lyap

Prefix: nis

Root: śvas (class 2)

च (ca) - and

(indeclinable)

भुजंगवत् (bhujaṁgavat) - like a serpent

(indeclinable)

formed with the suffix -vat (like)