महाभारतः mahābhārataḥ - book-6, chapter-18, verse-13

शाल्वा मत्स्यास्तथाम्बष्ठास्त्रिगर्ताः केकयास्तथा ।
सौवीराः कितवाः प्राच्याः प्रतीच्योदीच्यमालवाः ॥१३॥

13. śālvā matsyāstathāmbaṣṭhāstrigartāḥ kekayāstathā ,
sauvīrāḥ kitavāḥ prācyāḥ pratīcyodīcyamālavāḥ.

13. śālvāḥ matsyāḥ tathā ambaṣṭhāḥ trigartāḥ kekayāḥ
tathā sauvīrāḥ kitavāḥ prācyāḥ pratīcyodīcyamālavāḥ

13. śālvāḥ matsyāḥ tathā ambaṣṭhāḥ trigartāḥ kekayāḥ
tathā sauvīrāḥ kitavāḥ prācyāḥ pratīcyodīcyamālavāḥ

13. The Śālvas, Matsyas, Ambaṣṭhas, Trigartas, and Kekayas, as well as the Sauvīras, Kitavas, the Easterners, and the Westerners, Northerners, and Mālavāḥ.

Words meanings summery:

• शाल्वाः (śālvāḥ) - Śālvas (a people/tribe) (Śālvas)

• मत्स्याः (matsyāḥ) - Matsyas (a people/tribe) (Matsyas)

• तथा (tathā) - and (and, likewise, thus)

• अम्बष्ठाः (ambaṣṭhāḥ) - Ambaṣṭhas (a people/tribe) (Ambaṣṭhas)

• त्रिगर्ताः (trigartāḥ) - Trigartas (a people/tribe) (Trigartas)

• केकयाः (kekayāḥ) - Kekayas (a people/tribe) (Kekayas)

• तथा (tathā) - as well as (and, likewise, thus)

• सौवीराः (sauvīrāḥ) - Sauvīras (a people/tribe) (Sauvīras)

• कितवाः (kitavāḥ) - Kitavas (a people/tribe) (Kitavas)

• प्राच्याः (prācyāḥ) - Easterners (Easterners; from the east)

• प्रतीच्योदीच्यमालवाः (pratīcyodīcyamālavāḥ) - the Westerners, Northerners, and Mālavāḥ (a collective group of peoples) (Westerners, Northerners, and Mālavāḥ)

Words meanings and morphology

शाल्वाः (śālvāḥ) - Śālvas (a people/tribe) (Śālvas)

(proper noun)

Nominative, masculine, plural of śālva

śālva - name of a people/tribe

मत्स्याः (matsyāḥ) - Matsyas (a people/tribe) (Matsyas)

(proper noun)

Nominative, masculine, plural of matsya

matsya - name of a people/tribe; fish

तथा (tathā) - and (and, likewise, thus)

(indeclinable)

अम्बष्ठाः (ambaṣṭhāḥ) - Ambaṣṭhas (a people/tribe) (Ambaṣṭhas)

(proper noun)

Nominative, masculine, plural of ambaṣṭha

ambaṣṭha - name of a people/tribe

त्रिगर्ताः (trigartāḥ) - Trigartas (a people/tribe) (Trigartas)

(proper noun)

Nominative, masculine, plural of trigarta

trigarta - name of a people/tribe, 'three pits' (a region)

केकयाः (kekayāḥ) - Kekayas (a people/tribe) (Kekayas)

(proper noun)

Nominative, masculine, plural of kekaya

kekaya - name of a people/tribe

तथा (tathā) - as well as (and, likewise, thus)

(indeclinable)

सौवीराः (sauvīrāḥ) - Sauvīras (a people/tribe) (Sauvīras)

(proper noun)

Nominative, masculine, plural of sauvīra

sauvīra - name of a people/tribe

कितवाः (kitavāḥ) - Kitavas (a people/tribe) (Kitavas)

(proper noun)

Nominative, masculine, plural of kitava

kitava - name of a people/tribe; gambler

प्राच्याः (prācyāḥ) - Easterners (Easterners; from the east)

(adjective)

Nominative, masculine, plural of prācya

prācya - eastern, belonging to the east; an easterner

Derived from prāc (east).

Note: Refers to the people from the eastern region.

प्रतीच्योदीच्यमालवाः (pratīcyodīcyamālavāḥ) - the Westerners, Northerners, and Mālavāḥ (a collective group of peoples) (Westerners, Northerners, and Mālavāḥ)

(proper noun)

Nominative, masculine, plural of pratīcyodīcyamālava

pratīcyodīcyamālava - Westerners, Northerners, and Mālavāḥ (a collective name for these peoples/regions)

Dvandva compound of pratīcya (westerners), udīcya (northerners), and mālava (Mālavāḥ).

Compound type : dvandva (pratīcya+udīcya+mālava)

• pratīcya – western, belonging to the west; a westerner
  adjective (masculine)
  Derived from pratīc (west).
• udīcya – northern, belonging to the north; a northerner
  adjective (masculine)
  Derived from udīc (north).
• mālava – name of a people/tribe; inhabitant of Malava country
  proper noun (masculine)