महाभारतः mahābhārataḥ - book-6, chapter-65, verse-4

अरक्षन्मकरव्यूहं भीष्मो राजन्समन्ततः ।
तथैव पाण्डवा राजन्नरक्षन्व्यूहमात्मनः ॥४॥

4. arakṣanmakaravyūhaṁ bhīṣmo rājansamantataḥ ,
tathaiva pāṇḍavā rājannarakṣanvyūhamātmanaḥ.

4. arakṣan makaravyūham bhīṣmaḥ rājan samantataḥ
tathā eva pāṇḍavāḥ rājan arakṣan vyūham ātmanaḥ

4. rājan bhīṣmaḥ samantataḥ makaravyūham arakṣan
tathā eva rājan pāṇḍavāḥ ātmanaḥ vyūham arakṣan

4. O King, Bhishma protected the Makara (crocodile) battle formation from all sides. Likewise, O King, the Pandavas protected their own formation.

Words meanings summery:

• अरक्षन् (arakṣan) - the (Kaurava) forces led by Bhishma protected (they protected)

• मकरव्यूहम् (makaravyūham) - the crocodile formation

• भीष्मः (bhīṣmaḥ) - Bhishma

• राजन् (rājan) - O king

• समन्ततः (samantataḥ) - from all sides, all around

• तथा (tathā) - thus, in that manner

• एव (eva) - indeed, only, certainly

• पाण्डवाः (pāṇḍavāḥ) - the Pandavas

• राजन् (rājan) - O king

• अरक्षन् (arakṣan) - they protected

• व्यूहम् (vyūham) - the formation, battle array

• आत्मनः (ātmanaḥ) - of self, of their own

Words meanings and morphology

अरक्षन् (arakṣan) - the (Kaurava) forces led by Bhishma protected (they protected)

(verb)

3rd person , plural, active, past imperfect (laṅ) of rakṣ

Imperfect

3rd person plural imperfect active

Prefix: a

Root: rakṣ (class 1)

मकरव्यूहम् (makaravyūham) - the crocodile formation

(noun)

Accusative, masculine, singular of makaravyūha

makaravyūha - crocodile-shaped battle array, Makara formation

tatpurusha compound: makara (crocodile) + vyūha (formation)

Compound type : tatpuruṣa (makara+vyūha)

• makara – crocodile, sea-monster, mythical aquatic animal
  noun (masculine)
• vyūha – battle array, formation, arrangement
  noun (masculine)
  from vi + ūh
  Prefix: vi
  Root: ūh (class 1)

भीष्मः (bhīṣmaḥ) - Bhishma

(proper noun)

Nominative, masculine, singular of bhīṣma

bhīṣma - Bhishma (name of a Kuru warrior, son of Shantanu)

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler, prince

समन्ततः (samantataḥ) - from all sides, all around

(indeclinable)

from samanta (all around) + tas (adverbial suffix)

तथा (tathā) - thus, in that manner

(indeclinable)

एव (eva) - indeed, only, certainly

(indeclinable)

Note: Used with 'tathā' to form 'tathaiva' meaning 'similarly' or 'likewise'.

पाण्डवाः (pāṇḍavāḥ) - the Pandavas

(proper noun)

Nominative, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pandu, son of Pandu

from paṇḍu + a (taddhita aṇ)

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler, prince

अरक्षन् (arakṣan) - they protected

(verb)

3rd person , plural, active, past imperfect (laṅ) of rakṣ

Imperfect

3rd person plural imperfect active

Prefix: a

Root: rakṣ (class 1)

व्यूहम् (vyūham) - the formation, battle array

(noun)

Accusative, masculine, singular of vyūha

vyūha - arrangement, battle array, formation

from vi + ūh

Prefix: vi

Root: ūh (class 1)

आत्मनः (ātmanaḥ) - of self, of their own

(pronoun)

Genitive, masculine, singular of ātman

ātman - self, soul, essence, ego (ahaṅkāra)

reflexive pronoun (used as possessive)