महाभारतः mahābhārataḥ - book-8, chapter-15, verse-13

राजन्कमलपत्राक्ष प्रधानायुधवाहन ।
वज्रसंहननप्रख्य प्रधानबलपौरुष ॥१३॥

13. rājankamalapatrākṣa pradhānāyudhavāhana ,
vajrasaṁhananaprakhya pradhānabalapauruṣa.

13. rājan kamalapatrākṣa pradhānāyudhavāhana
vajrasaṃhananaprakhya pradhānabalapauruṣa

13. rājan kamalapatrākṣa pradhānāyudhavāhana
vajrasaṃhananaprakhya pradhānabalapauruṣa

13. O King, whose eyes are like lotus petals! O wielder of chief weapons and master of mounts! O one whose physique resembles the firmness of a thunderbolt! O you of supreme strength and valor!

Words meanings summery:

• राजन् (rājan) - O king

• कमलपत्राक्ष (kamalapatrākṣa) - O lotus-petal-eyed one

• प्रधानायुधवाहन (pradhānāyudhavāhana) - O wielder of chief weapons and master of mounts (or vehicles/bearers)

• वज्रसंहननप्रख्य (vajrasaṁhananaprakhya) - O one whose compactness/firmness resembles a thunderbolt

• प्रधानबलपौरुष (pradhānabalapauruṣa) - O one of supreme strength and valor

Words meanings and morphology

राजन् (rājan) - O king

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

कमलपत्राक्ष (kamalapatrākṣa) - O lotus-petal-eyed one

(adjective)

Vocative, masculine, singular of kamalapatrākṣa

kamalapatrākṣa - lotus-petal-eyed (having eyes like lotus petals)

Compound type : bahuvrīhi (kamala+patra+akṣi)

• kamala – lotus
  noun (neuter)
• patra – leaf, petal
  noun (neuter)
• akṣi – eye
  noun (neuter)

प्रधानायुधवाहन (pradhānāyudhavāhana) - O wielder of chief weapons and master of mounts (or vehicles/bearers)

(adjective)

Vocative, masculine, singular of pradhānāyudhavāhana

pradhānāyudhavāhana - having principal weapons and mounts/vehicles; one whose chief weapons are borne by his vehicle

Compound type : bahuvrīhi (pradhāna+āyudha+vāhana)

• pradhāna – chief, principal, foremost, excellent
  adjective
• āyudha – weapon, implement, tool
  noun (neuter)
• vāhana – vehicle, mount, bearer
  noun (neuter)

वज्रसंहननप्रख्य (vajrasaṁhananaprakhya) - O one whose compactness/firmness resembles a thunderbolt

(adjective)

Vocative, masculine, singular of vajrasaṃhananaprakhya

vajrasaṁhananaprakhya - resembling the compactness or firmness of a thunderbolt

Compound type : bahuvrīhi (vajra+saṃhanana+prakhya)

• vajra – thunderbolt, diamond
  noun (masculine)
• saṃhanana – compactness, firmness, solidity, strength
  noun (neuter)
• prakhya – resembling, similar to, appearing like
  adjective

प्रधानबलपौरुष (pradhānabalapauruṣa) - O one of supreme strength and valor

(adjective)

Vocative, masculine, singular of pradhānabalapauruṣa

pradhānabalapauruṣa - having principal strength and valor/manliness

Compound type : bahuvrīhi (pradhāna+bala+pauruṣa)

• pradhāna – chief, principal, foremost, excellent
  adjective
• bala – strength, power, force
  noun (neuter)
• pauruṣa – manliness, valor, human effort, virility
  noun (neuter)