महाभारतः mahābhārataḥ - book-5, chapter-101, verse-12

सुमनोमुखो दधिमुखः शङ्खो नन्दोपनन्दकौ ।
आप्तः कोटनकश्चैव शिखी निष्ठूरिकस्तथा ॥१२॥

12. sumanomukho dadhimukhaḥ śaṅkho nandopanandakau ,
āptaḥ koṭanakaścaiva śikhī niṣṭhūrikastathā.

12. sumanomukhaḥ dadhimukhaḥ śaṅkhaḥ nandopanandakau
āptaḥ koṭanakaḥ ca eva śikhī niṣṭhūrikaḥ tathā

12. Sumanomukha, Dadhimukha, Śaṅkha, and Nanda and Upanandaka; similarly, Āpta, Koṭanaka, and also Śikhī and Niṣṭhūrika.

Words meanings summery:

• सुमनोमुखः (sumanomukhaḥ) - a specific Nāga (serpent deity) named Sumanomukha (pleasant-faced, benevolent)

• दधिमुखः (dadhimukhaḥ) - a specific Nāga (serpent deity) named Dadhimukha (curd-faced)

• शङ्खः (śaṅkhaḥ) - a specific Nāga (serpent deity) named Śaṅkha (conch-shell; a specific Nāga name)

• नन्दोपनन्दकौ (nandopanandakau) - the two Nāgas (serpent deities) named Nanda and Upanandaka (Nanda and Upanandaka)

• आप्तः (āptaḥ) - a specific Nāga (serpent deity) named Āpta (obtained, trustworthy, connected)

• कोटनकः (koṭanakaḥ) - a specific Nāga (serpent deity) named Koṭanaka (a type of small snake)

• च (ca) - and

• एव (eva) - also (indeed, only, just, exactly, also)

• शिखी (śikhī) - a specific Nāga (serpent deity) named Śikhī (crested, horned; peacock)

• निष्ठूरिकः (niṣṭhūrikaḥ) - a specific Nāga (serpent deity) named Niṣṭhūrika (one who is firm or resolute)

• तथा (tathā) - similarly (thus, so, similarly)

Words meanings and morphology

सुमनोमुखः (sumanomukhaḥ) - a specific Nāga (serpent deity) named Sumanomukha (pleasant-faced, benevolent)

(proper noun)

Nominative, masculine, singular of sumanomukha

sumanomukha - pleasant-faced, benevolent; a specific Nāga name

दधिमुखः (dadhimukhaḥ) - a specific Nāga (serpent deity) named Dadhimukha (curd-faced)

(proper noun)

Nominative, masculine, singular of dadhimukha

dadhimukha - curd-faced; a specific Nāga name

शङ्खः (śaṅkhaḥ) - a specific Nāga (serpent deity) named Śaṅkha (conch-shell; a specific Nāga name)

(proper noun)

Nominative, masculine, singular of śaṅkha

śaṅkha - conch-shell; a specific Nāga name

नन्दोपनन्दकौ (nandopanandakau) - the two Nāgas (serpent deities) named Nanda and Upanandaka (Nanda and Upanandaka)

(proper noun)

Nominative, masculine, dual of nandopanandaka

nandopanandaka - Nanda and Upanandaka (names of Nāgas)

Compound type : dvandva (nanda+upanandaka)

• nanda – joy, happiness; a specific Nāga name
  proper noun (masculine)
• upanandaka – close to Nanda; a specific Nāga name
  proper noun (masculine)

आप्तः (āptaḥ) - a specific Nāga (serpent deity) named Āpta (obtained, trustworthy, connected)

(proper noun)

Nominative, masculine, singular of āpta

āpta - obtained, trustworthy, reliable; a specific Nāga name

Past Passive Participle

Derived from root √āp (to obtain)

Root: āp (class 5)

कोटनकः (koṭanakaḥ) - a specific Nāga (serpent deity) named Koṭanaka (a type of small snake)

(proper noun)

Nominative, masculine, singular of koṭanaka

koṭanaka - a type of small snake; a specific Nāga name

च (ca) - and

(indeclinable)

एव (eva) - also (indeed, only, just, exactly, also)

(indeclinable)

शिखी (śikhī) - a specific Nāga (serpent deity) named Śikhī (crested, horned; peacock)

(proper noun)

Nominative, masculine, singular of śikhin

śikhin - crested, horned; peacock; a specific Nāga name

निष्ठूरिकः (niṣṭhūrikaḥ) - a specific Nāga (serpent deity) named Niṣṭhūrika (one who is firm or resolute)

(proper noun)

Nominative, masculine, singular of niṣṭhūrika

niṣṭhūrika - firm, resolute; a specific Nāga name

तथा (tathā) - similarly (thus, so, similarly)

(indeclinable)