महाभारतः mahābhārataḥ - book-12, chapter-2, verse-18

स तत्रेष्वस्त्रमकरोद्भृगुश्रेष्ठाद्यथाविधि ।
प्रियश्चाभवदत्यर्थं देवगन्धर्वरक्षसाम् ॥१८॥

18. sa tatreṣvastramakarodbhṛguśreṣṭhādyathāvidhi ,
priyaścābhavadatyarthaṁ devagandharvarakṣasām.

18. saḥ tatra iṣvastram akarot bhṛguśreṣṭhāt yathāvidhi
priyaḥ ca abhavat atyartham devagandharvarakṣasām

18. saḥ tatra bhṛguśreṣṭhāt yathāvidhi iṣvastram akarot
ca devagandharvarakṣasām atyartham priyaḥ abhavat

18. There, he properly acquired knowledge of missile-weaponry from the foremost of the Bhrigus (Paraśurāma). And he became exceedingly dear to the Devas, Gandharvas, and Rakshasas.

Words meanings summery:

• सः (saḥ) - referring to Karna (he, that)

• तत्र (tatra) - referring to Mahendra mountain. (there, in that place)

• इष्वस्त्रम् (iṣvastram) - knowledge of missile-weaponry (missile-weapon, archery, bow and arrow)

• अकरोत् (akarot) - acquired or practiced the missile-weaponry. (did, made, performed, practiced, acquired)

• भृगुश्रेष्ठात् (bhṛguśreṣṭhāt) - from Paraśurāma (from the best of Bhrigus)

• यथाविधि (yathāvidhi) - according to rule, properly, ritually

• प्रियः (priyaḥ) - dear, beloved, pleasing

• च (ca) - and

• अभवत् (abhavat) - became, was

• अत्यर्थम् (atyartham) - exceedingly, very much, greatly

• देवगन्धर्वरक्षसाम् (devagandharvarakṣasām) - of the Devas, Gandharvas, and Rakshasas

Words meanings and morphology

सः (saḥ) - referring to Karna (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Nominative singular masculine of tad.

तत्र (tatra) - referring to Mahendra mountain. (there, in that place)

(indeclinable)

Note: Adverb of place.

इष्वस्त्रम् (iṣvastram) - knowledge of missile-weaponry (missile-weapon, archery, bow and arrow)

(noun)

Accusative, neuter, singular of iṣvastra

iṣvastra - missile-weapon, archery, bow and arrow

Compound type : dvandva / tatpuruṣa (iṣu+astra)

• iṣu – arrow
  noun (masculine)
• astra – weapon, missile
  noun (neuter)

Note: Object of akarot.

अकरोत् (akarot) - acquired or practiced the missile-weaponry. (did, made, performed, practiced, acquired)

(verb)

3rd person , singular, active, past imperfect (laṅ) of kṛ

Root: kṛ (class 8)

भृगुश्रेष्ठात् (bhṛguśreṣṭhāt) - from Paraśurāma (from the best of Bhrigus)

(noun)

Ablative, masculine, singular of bhṛguśreṣṭha

bhṛguśreṣṭha - best of the Bhrigus (a sage family), foremost Bhrigu

Compound type : tatpuruṣa (bhṛgu+śreṣṭha)

• bhṛgu – Bhrigu (name of an ancient sage and a brahmin clan)
  proper noun (masculine)
• śreṣṭha – best, excellent, supreme
  adjective (masculine)
  Superlative form of praśasya (praiseworthy)

Note: Ablative case indicating source 'from'.

यथाविधि (yathāvidhi) - according to rule, properly, ritually

(indeclinable)

Compound type : avyayībhāva (yathā+vidhi)

• yathā – as, in which way, according to
  indeclinable
• vidhi – rule, rite, manner
  noun (masculine)

Note: Adverbial compound.

प्रियः (priyaḥ) - dear, beloved, pleasing

(adjective)

Nominative, masculine, singular of priya

priya - dear, beloved, pleasing

च (ca) - and

(indeclinable)

Note: Postpositive conjunction.

अभवत् (abhavat) - became, was

(verb)

3rd person , singular, active, past imperfect (laṅ) of bhū

Root: bhū (class 1)

अत्यर्थम् (atyartham) - exceedingly, very much, greatly

(indeclinable)

Compound type : tatpuruṣa (ati+artha)

• ati – over, beyond, exceeding
  indeclinable
• artha – purpose, meaning, wealth, matter
  noun (masculine)

Note: Used adverbially.

देवगन्धर्वरक्षसाम् (devagandharvarakṣasām) - of the Devas, Gandharvas, and Rakshasas

(noun)

Genitive, masculine, plural of devagandharvarakṣasa

devagandharvarakṣasa - Devas, Gandharvas, and Rakshasas

Compound type : dvandva (deva+gandharva+rākṣasa)

• deva – deity, god, celestial being
  noun (masculine)
• gandharva – Gandharva (a class of celestial beings)
  noun (masculine)
• rākṣasa – Rakshasa (a class of mythological beings)
  noun (masculine)