महाभारतः mahābhārataḥ - book-1, chapter-159, verse-3

यक्षराक्षसगन्धर्वाः पिशाचोरगमानवाः ।
विस्तरं कुरुवंशस्य श्रीमतः कथयन्ति ते ॥३॥

3. yakṣarākṣasagandharvāḥ piśācoragamānavāḥ ,
vistaraṁ kuruvaṁśasya śrīmataḥ kathayanti te.

3. yakṣarākṣasagandharvāḥ piśācoragamānavāḥ |
vistaram kuruvaṃśasya śrīmataḥ kathayanti te

3. The Yakshas, Rakshasas, Gandharvas, Pishachas, serpents (uraga), and humans — they all narrate the extensive history of the glorious Kuru dynasty.

Words meanings summery:

• यक्षराक्षसगन्धर्वाः (yakṣarākṣasagandharvāḥ) - Yakshas, Rakshasas, and Gandharvas

• पिशाचोरगमानवाः (piśācoragamānavāḥ) - Pishachas, serpents, and humans

• विस्तरम् (vistaram) - extensive history, detailed account (expansion, detailed account, greatness)

• कुरुवंशस्य (kuruvaṁśasya) - of the Kuru dynasty

• श्रीमतः (śrīmataḥ) - of the glorious, of the splendid

• कथयन्ति (kathayanti) - they narrate, they tell

• ते (te) - they

Words meanings and morphology

यक्षराक्षसगन्धर्वाः (yakṣarākṣasagandharvāḥ) - Yakshas, Rakshasas, and Gandharvas

(noun)

Nominative, masculine, plural of yakṣarākṣasagandharva

yakṣarākṣasagandharva - group of Yakshas, Rakshasas, and Gandharvas

Compound type : dvandva (yakṣa+rākṣasa+gandharva)

• yakṣa – Yaksha (a class of demigods, attendants of Kubera)
  noun (masculine)
• rākṣasa – Rakshasa (a class of mythological beings, often demonic)
  noun (masculine)
• gandharva – Gandharva (a class of celestial musicians and dancers)
  noun (masculine)

पिशाचोरगमानवाः (piśācoragamānavāḥ) - Pishachas, serpents, and humans

(noun)

Nominative, masculine, plural of piśācoragamānava

piśācoragamānava - group of Pishachas, Uragas (serpents), and Manavas (humans)

Compound type : dvandva (piśāca+uraga+mānava)

• piśāca – Pishacha (a class of malevolent spirits or goblins)
  noun (masculine)
• uraga – serpent, snake
  noun (masculine)
• mānava – human, man, descendant of Manu
  noun (masculine)

विस्तरम् (vistaram) - extensive history, detailed account (expansion, detailed account, greatness)

(noun)

Accusative, masculine, singular of vistara

vistara - expansion, extent, detail, description, greatness

Prefix: vi

Root: stṛ (class 5)

कुरुवंशस्य (kuruvaṁśasya) - of the Kuru dynasty

(noun)

Genitive, masculine, singular of kuruvaṃśa

kuruvaṁśa - the Kuru lineage/dynasty

Compound type : ṣaṣṭhī-tatpuruṣa (kuru+vaṃśa)

• kuru – Kuru (name of an ancient king, founder of a dynasty)
  proper noun (masculine)
• vaṃśa – lineage, family, race, dynasty, bamboo
  noun (masculine)

श्रीमतः (śrīmataḥ) - of the glorious, of the splendid

(adjective)

Genitive, masculine, singular of śrīmat

śrīmat - glorious, splendid, prosperous, rich, beautiful

Possessive suffix -mat

कथयन्ति (kathayanti) - they narrate, they tell

(verb)

3rd person , plural, active, present (lat) of kathay

Present (lat)

3rd person plural, active voice (denominative from kathā)

Root: kath (class 10)

ते (te) - they

(pronoun)

Nominative, masculine, plural of tad

tad - that, he, she, it (demonstrative pronoun)