महाभारतः mahābhārataḥ - book-7, chapter-131, verse-76

विवृतास्यशिरोग्रीवैर्हैडिम्बानुचरैः सह ।
पौलस्त्यैर्यातुधानैश्च तामसैश्चोग्रविक्रमैः ॥७६॥

76. vivṛtāsyaśirogrīvairhaiḍimbānucaraiḥ saha ,
paulastyairyātudhānaiśca tāmasaiścogravikramaiḥ.

76. vivṛta-āsya-śiro-grīvaiḥ haiḍimba-anucaraiḥ saha
paulastyaiḥ yātudhānaiḥ ca tāmasaiḥ ca ugra-vikramaiḥ

76. (rākṣasaiḥ) vivṛta-āsya-śiro-grīvaiḥ
haiḍimba-anucaraiḥ saha
paulastyaiḥ ca yātudhānaiḥ ca
tāmasaiḥ ca ugra-vikramaiḥ (vṛtam)

76. (These rākṣasas were) whose mouths, heads, and necks were wide open, accompanied by the followers of Ghatotkaca (Haiḍimba), and by Poulastya rākṣasas and Yātudhānas, as well as by others of fierce valor and dark (tāmasic) nature,

Words meanings summery:

• विवृत-आस्य-शिरो-ग्रीवैः (vivṛta-āsya-śiro-grīvaiḥ) - with wide-open mouths, heads, and necks

• हैडिम्ब-अनुचरैः (haiḍimba-anucaraiḥ) - by the followers of Haiḍimba (Ghatotkaca)

• सह (saha) - with, along with, together with

• पौलस्त्यैः (paulastyaiḥ) - by the Poulastyas (descendants of Pulastya, a class of rākṣasas)

• यातुधानैः (yātudhānaiḥ) - by yātudhānas (a type of demon/rākṣasa)

• च (ca) - and, also

• तामसैः (tāmasaiḥ) - by those of dark/ignorant nature, by Tamasic ones

• च (ca) - and, also

• उग्र-विक्रमैः (ugra-vikramaiḥ) - with fierce valor, of terrible might

Words meanings and morphology

विवृत-आस्य-शिरो-ग्रीवैः (vivṛta-āsya-śiro-grīvaiḥ) - with wide-open mouths, heads, and necks

(adjective)

Instrumental, masculine, plural of vivṛta-āsya-śiro-grīva

vivṛta-āsya-śiro-grīva - having mouths, heads, and necks wide open/exposed

Compound type : Bahuvrīhi (vivṛta+āsya+śiras+grīvā)

• vivṛta – opened, exposed, revealed
  participle
  Past Passive Participle
  From the root vṛ (to cover) with prefix vi (implies 'un-covered', hence 'opened').
  Prefix: vi
  Root: vṛ (class 5)
• āsya – mouth, face
  noun (neuter)
• śiras – head, top
  noun (neuter)
• grīvā – neck
  noun (feminine)

Note: Modifies 'rākṣasaiḥ'.

हैडिम्ब-अनुचरैः (haiḍimba-anucaraiḥ) - by the followers of Haiḍimba (Ghatotkaca)

(noun)

Instrumental, masculine, plural of haiḍimba-anucara

haiḍimba-anucara - follower of Ghatotkaca

Compound type : Ṣaṣṭhī-Tatpuruṣa (haiḍimba+anucara)

• haiḍimba – son of Hiḍimbā, Ghatotkaca
  proper noun (masculine)
  Patronymic from Hiḍimbā.
• anucara – follower, attendant
  noun (masculine)
  From root car (to move) with prefix anu.
  Prefix: anu
  Root: car (class 1)

सह (saha) - with, along with, together with

(indeclinable)

Note: Governs instrumental case.

पौलस्त्यैः (paulastyaiḥ) - by the Poulastyas (descendants of Pulastya, a class of rākṣasas)

(proper noun)

Instrumental, masculine, plural of paulastya

paulastya - descendant of Pulastya, a class of rākṣasas (e.g., Ravana's clan)

Patronymic from Pulastya.

Note: Modifies 'rākṣasaiḥ'.

यातुधानैः (yātudhānaiḥ) - by yātudhānas (a type of demon/rākṣasa)

(noun)

Instrumental, masculine, plural of yātudhāna

yātudhāna - demon, rākṣasa, fiend

Note: Modifies 'rākṣasaiḥ'.

च (ca) - and, also

(indeclinable)

तामसैः (tāmasaiḥ) - by those of dark/ignorant nature, by Tamasic ones

(adjective)

Instrumental, masculine, plural of tāmasa

tāmasa - dark, ignorant, pertaining to tamas (quality of inertia/darkness)

Derived from tamas (darkness).

Note: Modifies 'rākṣasaiḥ'.

च (ca) - and, also

(indeclinable)

उग्र-विक्रमैः (ugra-vikramaiḥ) - with fierce valor, of terrible might

(adjective)

Instrumental, masculine, plural of ugra-vikrama

ugra-vikrama - of fierce valor, terrible in prowess

Compound type : Bahuvrīhi (ugra+vikrama)

• ugra – fierce, terrible, formidable
  adjective
• vikrama – valor, prowess, might, courage
  noun (masculine)
  From root kram (to step, go) with prefix vi.
  Prefix: vi
  Root: kram (class 1)

Note: Modifies 'rākṣasaiḥ'.