महाभारतः mahābhārataḥ - book-9, chapter-13, verse-21

तावुभौ पुरुषव्याघ्रौ श्वेताश्वौ धन्विनां वरौ ।
समीयतुस्तदा तूर्णं परस्परवधैषिणौ ॥२१॥

21. tāvubhau puruṣavyāghrau śvetāśvau dhanvināṁ varau ,
samīyatustadā tūrṇaṁ parasparavadhaiṣiṇau.

21. tau ubhau puruṣavyāghrau śvetāśvau dhanvinām
varau samīyatuḥ tadā tūrṇam paraspara-vadhaiṣiṇau

21. tau ubhau puruṣavyāghrau śvetāśvau dhanvinām
varau paraspara-vadhaiṣiṇau tadā tūrṇam samīyatuḥ

21. Those two, tigers among men (puruṣavyāghrau), riding white horses, and foremost among archers, then quickly advanced towards each other, intent on killing one another.

Words meanings summery:

• तौ (tau) - those two

• उभौ (ubhau) - both

• पुरुषव्याघ्रौ (puruṣavyāghrau) - tigers among men, best of men

• श्वेताश्वौ (śvetāśvau) - having white horses

• धन्विनाम् (dhanvinām) - of archers, among archers

• वरौ (varau) - best, excellent

• समीयतुः (samīyatuḥ) - they approached, they met

• तदा (tadā) - then, at that time

• तूर्णम् (tūrṇam) - quickly, swiftly

• परस्पर-वधैषिणौ (paraspara-vadhaiṣiṇau) - desiring each other's death, mutually intent on killing

Words meanings and morphology

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

पुरुषव्याघ्रौ (puruṣavyāghrau) - tigers among men, best of men

(noun)

Nominative, masculine, dual of puruṣavyāghra

puruṣavyāghra - tiger among men, best of men

Compound type : tatpurusha (puruṣa+vyāghra)

• puruṣa – man, person
  noun (masculine)
• vyāghra – tiger
  noun (masculine)

श्वेताश्वौ (śvetāśvau) - having white horses

(adjective)

Nominative, masculine, dual of śvetāśva

śvetāśva - having white horses, white-horsed

Compound type : bahuvrīhi (śveta+aśva)

• śveta – white
  adjective (masculine)
• aśva – horse
  noun (masculine)

धन्विनाम् (dhanvinām) - of archers, among archers

(noun)

Genitive, masculine, plural of dhanvin

dhanvin - archer, bowman

वरौ (varau) - best, excellent

(adjective)

Nominative, masculine, dual of vara

vara - best, excellent, choice

समीयतुः (samīyatuḥ) - they approached, they met

(verb)

3rd person , dual, active, past imperfect (laṅ) of sam-i

Imperfect

Root 'i' (to go) with prefix 'sam'. Third person dual.

Prefix: sam

Root: i (class 2)

तदा (tadā) - then, at that time

(indeclinable)

तूर्णम् (tūrṇam) - quickly, swiftly

(indeclinable)

Past Passive Participle

From root tvar (to hasten). Used here as an adverb.

Root: tvar (class 1)

Note: Used adverbially.

परस्पर-वधैषिणौ (paraspara-vadhaiṣiṇau) - desiring each other's death, mutually intent on killing

(adjective)

Nominative, masculine, dual of parasparavadhaiṣin

parasparavadhaiṣin - desiring each other's death

Compound type : tatpurusha (paraspara+vadha+eṣin)

• paraspara – mutual, reciprocal, each other
  pronoun (neuter)
• vadha – killing, slaughter
  noun (masculine)
  Root: vadh
• eṣin – desiring, seeking
  adjective (masculine)
  Agent Noun
  Derived from root iṣ (to desire) with -in suffix.
  Root: iṣ (class 4)