महाभारतः mahābhārataḥ - book-9, chapter-54, verse-30

सिंहाविव दुराधर्षौ गदायुद्धे परंतपौ ।
नखदंष्ट्रायुधौ वीरौ व्याघ्राविव दुरुत्सहौ ॥३०॥

30. siṁhāviva durādharṣau gadāyuddhe paraṁtapau ,
nakhadaṁṣṭrāyudhau vīrau vyāghrāviva durutsahau.

30. siṃhau iva durādharṣau gadāyuddhe paraṃtapau
nakhadaṃṣṭrāyudhau vīrau vyāghrau iva durutsahau

30. durādharṣau paraṃtapau vīrau gadāyuddhe siṃhau
iva nakhadaṃṣṭrāyudhau durutsahau vyāghrau iva

30. Like two irresistible lions in a mace-fight, these two heroes, the tormentors of foes, were like two unconquerable tigers whose weapons are their claws and fangs.

Words meanings summery:

• सिंहौ (siṁhau) - two lions

• इव (iva) - like, as, as if

• दुराधर्षौ (durādharṣau) - two difficult to attack, irresistible, unconquerable

• गदायुद्धे (gadāyuddhe) - in a mace-fight, in a battle with maces

• परंतपौ (paraṁtapau) - referring to Bhima and Duryodhana (two tormentors of foes, two scorchers of enemies)

• नखदंष्ट्रायुधौ (nakhadaṁṣṭrāyudhau) - whose weapons are claws and fangs

• वीरौ (vīrau) - referring to Bhima and Duryodhana (two heroes, two brave ones)

• व्याघ्रौ (vyāghrau) - two tigers

• इव (iva) - like, as, as if

• दुरुत्सहौ (durutsahau) - two difficult to endure, two unconquerable, two indomitable

Words meanings and morphology

सिंहौ (siṁhau) - two lions

(noun)

Nominative, masculine, dual of siṃha

siṁha - a lion

इव (iva) - like, as, as if

(indeclinable)

दुराधर्षौ (durādharṣau) - two difficult to attack, irresistible, unconquerable

(adjective)

Nominative, masculine, dual of durādharṣa

durādharṣa - difficult to attack/assault, irresistible, unconquerable

Compound type : tatpuruṣa (dur+ādharṣa)

• dur – difficult, bad (prefix)
  indeclinable
• ādharṣa – attack, assault; contempt
  noun (masculine)
  Derived from ā-√dhṛṣ
  Prefix: ā
  Root: dhṛṣ (class 1)

गदायुद्धे (gadāyuddhe) - in a mace-fight, in a battle with maces

(noun)

Locative, neuter, singular of gadāyuddha

gadāyuddha - mace-fight, battle with maces

Compound type : tatpuruṣa (gadā+yuddha)

• gadā – a mace, club
  noun (feminine)
• yuddha – fight, battle, war
  noun (neuter)
  Past Passive Participle (substantivized)
  Derived from root √yudh (to fight)
  Root: yudh (class 4)

परंतपौ (paraṁtapau) - referring to Bhima and Duryodhana (two tormentors of foes, two scorchers of enemies)

(noun)

Nominative, masculine, dual of paraṃtapa

paraṁtapa - tormentor of foes, scorcher of enemies

Compound type : upapada (para+tapa)

• para – other, alien, enemy
  pronoun
• tapa – heating, scorching, tormenting
  noun (masculine)
  Derived from root √tap (to heat, burn)
  Root: tap (class 1)

नखदंष्ट्रायुधौ (nakhadaṁṣṭrāyudhau) - whose weapons are claws and fangs

(adjective)

Nominative, masculine, dual of nakhadaṃṣṭrāyudha

nakhadaṁṣṭrāyudha - having claws and fangs as weapons

Compound type : bahuvrīhi (nakha+daṃṣṭrā+āyudha)

• nakha – a nail, claw
  noun (masculine)
• daṃṣṭrā – a fang, tusk
  noun (feminine)
• āyudha – a weapon, implement
  noun (neuter)

वीरौ (vīrau) - referring to Bhima and Duryodhana (two heroes, two brave ones)

(noun)

Nominative, masculine, dual of vīra

vīra - a hero, warrior; brave, powerful

व्याघ्रौ (vyāghrau) - two tigers

(noun)

Nominative, masculine, dual of vyāghra

vyāghra - a tiger

इव (iva) - like, as, as if

(indeclinable)

दुरुत्सहौ (durutsahau) - two difficult to endure, two unconquerable, two indomitable

(adjective)

Nominative, masculine, dual of durutsaha

durutsaha - difficult to endure/bear, unconquerable, indomitable

Compound type : tatpuruṣa (dur+utsaha)

• dur – difficult, bad (prefix)
  indeclinable
• utsaha – endeavor, energy, zeal, might
  noun (masculine)
  From ut-√sah
  Prefix: ut
  Root: sah (class 1)