महाभारतः mahābhārataḥ - book-3, chapter-194, verse-30

स्वकावनावृतावूरू दृष्ट्वा देववरस्तदा ।
मधुकैटभयो राजञ्शिरसी मधुसूदनः ।
चक्रेण शितधारेण न्यकृन्तत महायशाः ॥३०॥

30. svakāvanāvṛtāvūrū dṛṣṭvā devavarastadā ,
madhukaiṭabhayo rājañśirasī madhusūdanaḥ ,
cakreṇa śitadhāreṇa nyakṛntata mahāyaśāḥ.

30. svakau anāvṛtau ūrū dṛṣṭvā
devavaraḥ tadā madhukaiṭabhayoḥ rājan
śirasī madhusūdanaḥ cakreṇa
śitadhāreṇa nyakṛntata mahāyaśāḥ

30. O king, then the greatly glorious Madhusūdana (Madhusūdana), the best among the gods, having seen his own two uncovered thighs, cut off the two heads of Madhu and Kaiṭabha with his sharp-edged discus.

Words meanings summery:

• स्वकौ (svakau) - his own (dual)

• अनावृतौ (anāvṛtau) - uncovered, unobstructed (dual)

• ऊरू (ūrū) - two thighs

• दृष्ट्वा (dṛṣṭvā) - having seen, having perceived

• देववरः (devavaraḥ) - best among gods, excellent god

• तदा (tadā) - then, at that time

• मधुकैटभयोः (madhukaiṭabhayoḥ) - of Madhu and Kaiṭabha

• राजन् (rājan) - O king

• शिरसी (śirasī) - two heads

• मधुसूदनः (madhusūdanaḥ) - Madhusūdana (Madhusūdana) (Madhusūdana (destroyer of the demon Madhu, an epithet of Krishna/Vishnu))

• चक्रेण (cakreṇa) - with the discus, by means of the wheel

• शितधारेण (śitadhāreṇa) - with sharp edges, having sharp blades

• न्यकृन्तत (nyakṛntata) - he cut off, he severed

• महायशाः (mahāyaśāḥ) - the greatly glorious one, one of great fame

Words meanings and morphology

स्वकौ (svakau) - his own (dual)

(adjective)

Nominative, masculine, dual of svaka

svaka - own, one's own, peculiar

अनावृतौ (anāvṛtau) - uncovered, unobstructed (dual)

(participle)

Nominative, masculine, dual of anāvṛta

anāvṛta - uncovered, unhindered, unprotected

Past Passive Participle

Derived from root vṛ with prefix ā and negative prefix an-

Compound type : bahuvrīhi (an+āvṛta)

• an – not, un-
  indeclinable
• āvṛta – covered, surrounded, enclosed
  participle (masculine)
  Past Passive Participle
  Derived from root vṛ with prefix ā
  Prefix: ā
  Root: vṛ (class 9)

ऊरू (ūrū) - two thighs

(noun)

Nominative, masculine, dual of ūru

ūru - thigh, lap

Note: Can also be accusative dual masculine.

दृष्ट्वा (dṛṣṭvā) - having seen, having perceived

(indeclinable participle)

देववरः (devavaraḥ) - best among gods, excellent god

(noun)

Nominative, masculine, singular of devavara

devavara - best among gods

Compound type : tatpuruṣa (deva+vara)

• deva – god, deity
  noun (masculine)
• vara – best, excellent, superior
  adjective (masculine)

तदा (tadā) - then, at that time

(indeclinable)

मधुकैटभयोः (madhukaiṭabhayoḥ) - of Madhu and Kaiṭabha

(proper noun)

Genitive, masculine, dual of madhukaiṭabha

madhukaiṭabha - Madhu and Kaiṭabha (names of two demons)

Compound type : dvandva (madhu+kaiṭabha)

• madhu – name of a demon
  proper noun (masculine)
• kaiṭabha – name of a demon
  proper noun (masculine)

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

शिरसी (śirasī) - two heads

(noun)

Accusative, neuter, dual of śiras

śiras - head, top, peak

Note: Can also be nominative dual neuter.

मधुसूदनः (madhusūdanaḥ) - Madhusūdana (Madhusūdana) (Madhusūdana (destroyer of the demon Madhu, an epithet of Krishna/Vishnu))

(proper noun)

Nominative, masculine, singular of madhusūdana

madhusūdana - destroyer of Madhu (demon), epithet of Vishnu/Krishna

Compound type : tatpuruṣa (madhu+sūdana)

• madhu – name of a demon
  proper noun (masculine)
• sūdana – destroyer, killer
  noun (masculine)
  Root: sūd (class 10)

चक्रेण (cakreṇa) - with the discus, by means of the wheel

(noun)

Instrumental, neuter, singular of cakra

cakra - wheel, discus, circle

शितधारेण (śitadhāreṇa) - with sharp edges, having sharp blades

(adjective)

Instrumental, neuter, singular of śitadhāra

śitadhāra - sharp-edged, having sharp blades

Compound type : bahuvrīhi (śita+dhāra)

• śita – sharp, whetted, made keen
  participle (masculine)
  Past Passive Participle
  Derived from root śo/śā
  Root: śo (class 4)
• dhāra – edge, blade, stream
  noun (masculine)

न्यकृन्तत (nyakṛntata) - he cut off, he severed

(verb)

3rd person , singular, middle, imperfect (laṅ) of nikṛnt

Prefix: ni

Root: kṛnt (class 1)

महायशाः (mahāyaśāḥ) - the greatly glorious one, one of great fame

(adjective)

Nominative, masculine, singular of mahāyaśas

mahāyaśas - great fame, great glory; (as adjective) greatly glorious, famous

Compound type : bahuvrīhi (mahā+yaśas)

• mahā – great, large, mighty
  adjective
• yaśas – fame, glory, renown
  noun (neuter)