महाभारतः mahābhārataḥ - book-6, chapter-19, verse-20

चक्ररक्षौ तु भीमस्य माद्रीपुत्रौ महाद्युती ।
द्रौपदेयाः ससौभद्राः पृष्ठगोपास्तरस्विनः ॥२०॥

20. cakrarakṣau tu bhīmasya mādrīputrau mahādyutī ,
draupadeyāḥ sasaubhadrāḥ pṛṣṭhagopāstarasvinaḥ.

20. cakrarakṣau tu Bhīmasya Mādrīputrau mahādyutī
Draupadeyāḥ sasaubhadrāḥ pṛṣṭhagopāḥ tarasvinaḥ

20. tu Bhīmasya cakrarakṣau mahādyutī Mādrīputrau (āstām)
Draupadeyāḥ sasaubhadrāḥ tarasvinaḥ pṛṣṭhagopāḥ (āsan)

20. The two splendid sons of Mādrī served as Bhīma's wheel-guards, while the sons of Draupadī, accompanied by Subhadrā's son, were the mighty rear-guards.

Words meanings summery:

• चक्ररक्षौ (cakrarakṣau) - the two warriors who guard the wheels of the chariot (referring to Nakula and Sahadeva). (two wheel-guards)

• तु (tu) - but, indeed (but, indeed, on the other hand)

• भीमस्य (bhīmasya) - of Bhīma (referring to Bhīmasena). (of Bhīma)

• माद्रीपुत्रौ (mādrīputrau) - Nakula and Sahadeva, the twin sons of Mādrī. (two sons of Mādrī)

• महाद्युती (mahādyutī) - splendid, brilliant (describing Nakula and Sahadeva). (greatly effulgent, very brilliant)

• द्रौपदेयाः (draupadeyāḥ) - the five sons of Draupadī, the Upapāṇḍavas. (sons of Draupadī)

• ससौभद्राः (sasaubhadrāḥ) - accompanied by Abhimanyu, the son of Subhadrā. (with Subhadrā's son, accompanied by Subhadrā's son)

• पृष्ठगोपाः (pṛṣṭhagopāḥ) - those guarding the back of the army. (rear-guards, protectors of the rear)

• तरस्विनः (tarasvinaḥ) - mighty, powerful (describing the rear-guards). (mighty, powerful, swift)

Words meanings and morphology

चक्ररक्षौ (cakrarakṣau) - the two warriors who guard the wheels of the chariot (referring to Nakula and Sahadeva). (two wheel-guards)

(noun)

Nominative, masculine, dual of cakrarakṣa

cakrarakṣa - wheel-guard (one who protects the wheels of a chariot)

Compound.

Compound type : Tatpuruṣa (cakra+rakṣa)

• cakra – wheel, discus
  noun (neuter)
  Root: kṛ (class 8)
• rakṣa – protector, guarding
  noun (masculine)
  From root rakṣ (to protect).
  Root: rakṣ (class 1)

Note: Refers to Nakula and Sahadeva.

तु (tu) - but, indeed (but, indeed, on the other hand)

(indeclinable)

भीमस्य (bhīmasya) - of Bhīma (referring to Bhīmasena). (of Bhīma)

(proper noun)

Genitive, masculine, singular of Bhīma

Bhīma - Bhīma, formidable, terrible. Shortened name for Bhīmasena.

Root: bhī

माद्रीपुत्रौ (mādrīputrau) - Nakula and Sahadeva, the twin sons of Mādrī. (two sons of Mādrī)

(noun)

Nominative, masculine, dual of Mādrīputra

Mādrīputra - son of Mādrī

Compound.

Compound type : Tatpuruṣa (Mādrī+putra)

• Mādrī – name of the second wife of Pāṇḍu and mother of Nakula and Sahadeva.
  proper noun (feminine)
• putra – son
  noun (masculine)

महाद्युती (mahādyutī) - splendid, brilliant (describing Nakula and Sahadeva). (greatly effulgent, very brilliant)

(adjective)

Nominative, masculine, dual of mahādyuti

mahādyuti - greatly effulgent, splendid, very brilliant, illustrious

Compound.

Compound type : Bahuvrīhi (mahā+dyuti)

• mahā – great, mighty, large
  adjective
  From mahat.
• dyuti – splendor, light, brilliance, lustre
  noun (feminine)
  From root dyut (to shine).
  Root: dyut (class 1)

द्रौपदेयाः (draupadeyāḥ) - the five sons of Draupadī, the Upapāṇḍavas. (sons of Draupadī)

(noun)

Nominative, masculine, plural of Draupadeya

Draupadeya - son of Draupadī (the Upapāṇḍavas)

Derived from Draupadī with suffix eya.

ससौभद्राः (sasaubhadrāḥ) - accompanied by Abhimanyu, the son of Subhadrā. (with Subhadrā's son, accompanied by Subhadrā's son)

(adjective)

Nominative, masculine, plural of sasaubhadra

sasaubhadra - accompanied by Saubhadra (Abhimanyu, son of Subhadrā)

Bahuvrīhi compound with sa (with) and saubhadra.

Compound type : Bahuvrīhi (sa+saubhadra)

• sa – with, together with
  indeclinable
  From saha.
• saubhadra – son of Subhadrā (Abhimanyu)
  noun (masculine)
  Derived from Subhadrā with suffix a.

Note: This word modifies draupadeyāḥ, meaning the sons of Draupadī along with Abhimanyu.

पृष्ठगोपाः (pṛṣṭhagopāḥ) - those guarding the back of the army. (rear-guards, protectors of the rear)

(noun)

Nominative, masculine, plural of pṛṣṭhagopa

pṛṣṭhagopa - rear-guard, protector of the rear

Compound.

Compound type : Tatpuruṣa (pṛṣṭha+gopa)

• pṛṣṭha – back, rear
  noun (neuter)
  Root: pṛṣ (class 6)
• gopa – protector, guardian, cowherd
  noun (masculine)
  From root gup (to protect).
  Root: gup (class 1)

तरस्विनः (tarasvinaḥ) - mighty, powerful (describing the rear-guards). (mighty, powerful, swift)

(adjective)

Nominative, masculine, plural of tarasvin

tarasvin - mighty, powerful, swift, strong

From taras (speed, power) with suffix vin.

Root: tṛ