महाभारतः mahābhārataḥ - book-7, chapter-106, verse-21

अवक्रगामिभिर्बाणैरभ्यवर्षन्महायसैः ।
द्वैरथे दंशितं यत्तं सर्वशस्त्रभृतां वरम् ॥२१॥

21. avakragāmibhirbāṇairabhyavarṣanmahāyasaiḥ ,
dvairathe daṁśitaṁ yattaṁ sarvaśastrabhṛtāṁ varam.

21. avakragāmibhiḥ bāṇaiḥ abhyavarṣat mahāyasaiḥ
dvairathe daṃśitam yattam sarvaśastrabṛtām varam

21. dvairathe daṃśitam yattam sarvaśastrabṛtām varam
avakragāmibhiḥ mahāyasaiḥ bāṇaiḥ abhyavarṣat

21. (Bhimasena) showered (Karna) with unswerving, mighty, steel-pointed arrows in that single combat, (Karna who was) armored and ready, the best among all weapon-bearers.

Words meanings summery:

• अवक्रगामिभिः (avakragāmibhiḥ) - with straight-flying, unswerving

• बाणैः (bāṇaiḥ) - with arrows

• अभ्यवर्षत् (abhyavarṣat) - he showered upon, he rained upon

• महायसैः (mahāyasaiḥ) - with mighty, steel-pointed (arrows)

• द्वैरथे (dvairathe) - in the single combat (between two charioteers)

• दंशितम् (daṁśitam) - armored, protected, prepared

• यत्तम् (yattam) - striving, ready, alert, restrained

• सर्वशस्त्रबृताम् (sarvaśastrabṛtām) - among all weapon-bearers

• वरम् (varam) - the best, supreme, choice

Words meanings and morphology

अवक्रगामिभिः (avakragāmibhiḥ) - with straight-flying, unswerving

(adjective)

Instrumental, masculine, plural of avakragāmin

avakragāmin - going straight, unswerving (not crooked-going)

Compound type : nañ-bahuvrīhi (a+vakra+gāmin)

• a – not, un-
  indeclinable
  Negative prefix
• vakra – crooked, bent, indirect
  adjective
• gāmin – going, moving, leading to
  adjective
  Suffix -in from root gam (to go)
  Root: gam (class 1)

बाणैः (bāṇaiḥ) - with arrows

(noun)

Instrumental, masculine, plural of bāṇa

bāṇa - arrow

अभ्यवर्षत् (abhyavarṣat) - he showered upon, he rained upon

(verb)

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

Root: vṛṣ (class 1)

Note: Includes upasarga 'abhi'.

महायसैः (mahāyasaiḥ) - with mighty, steel-pointed (arrows)

(adjective)

Instrumental, masculine, plural of mahāyasa

mahāyasa - made of great iron/steel, mighty, strong

Compound type : karmadharaya (mahā+yasa)

• mahā – great, mighty
  adjective
• yasa – iron, steel
  noun (neuter)

द्वैरथे (dvairathe) - in the single combat (between two charioteers)

(noun)

Locative, neuter, singular of dvairatha

dvairatha - single combat between two charioteers

Derived from 'dviratha' (two chariots/warriors) by adding 'aṇ' suffix.

दंशितम् (daṁśitam) - armored, protected, prepared

(adjective)

Accusative, masculine, singular of daṃśita

daṁśita - armored, equipped with mail, bitten

Past Passive Participle

Derived from root 'daṃś' (to bite, to arm)

Root: daṃś (class 1)

यत्तम् (yattam) - striving, ready, alert, restrained

(adjective)

Accusative, masculine, singular of yatta

yatta - striving, prepared, self-controlled

Past Passive Participle

Derived from root 'yat' (to strive) or 'yam' (to restrain)

Root: yat (class 1)

सर्वशस्त्रबृताम् (sarvaśastrabṛtām) - among all weapon-bearers

(noun)

Genitive, masculine, plural of sarvaśastrabṛt

sarvaśastrabṛt - all weapon-bearers, all armed men

Compound type : bahuvrihi (sarva+śastra+bhṛt)

• sarva – all, every
  pronoun
• śastra – weapon, instrument
  noun (neuter)
• bhṛt – bearing, holding, maintaining
  adjective
  Derived from root bhṛ (to bear, carry)
  Root: bhṛ (class 3)

वरम् (varam) - the best, supreme, choice

(adjective)

Accusative, masculine, singular of vara

vara - best, excellent, choice