महाभारतः mahābhārataḥ - book-6, chapter-105, verse-13

तस्य शब्देन वित्रस्तास्तावका भरतर्षभ ।
सिंहस्येव मृगा राजन्व्यद्रवन्त महाभयात् ॥१३॥

13. tasya śabdena vitrastāstāvakā bharatarṣabha ,
siṁhasyeva mṛgā rājanvyadravanta mahābhayāt.

13. tasya śabdena vitrastāḥ tāvakāḥ bharatarṣabha
siṃhasya iva mṛgāḥ rājan vyadravanta mahābhayāt

13. bharatarṣabha rājan tasya śabdena vitrastāḥ
tāvakāḥ mṛgāḥ siṃhasya iva mahābhayāt vyadravanta

13. O best of Bharatas, O king, your warriors, terrified by his roar, fled in great fear, just as deer flee from a lion.

Words meanings summery:

• तस्य (tasya) - of Arjuna (his, of him)

• शब्देन (śabdena) - by the sound, by the roar

• वित्रस्ताः (vitrastāḥ) - greatly frightened, terrified

• तावकाः (tāvakāḥ) - Dhṛtarāṣṭra's soldiers (your (people), your soldiers, those belonging to you)

• भरतर्षभ (bharatarṣabha) - addressed to Dhṛtarāṣṭra (O best of Bharatas)

• सिंहस्य (siṁhasya) - of a lion

• इव (iva) - like, as, as if

• मृगाः (mṛgāḥ) - deer, animals

• राजन् (rājan) - addressed to Dhṛtarāṣṭra (O king)

• व्यद्रवन्त (vyadravanta) - they fled, they ran away

• महाभयात् (mahābhayāt) - from great fear

Words meanings and morphology

तस्य (tasya) - of Arjuna (his, of him)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

शब्देन (śabdena) - by the sound, by the roar

(noun)

Instrumental, masculine, singular of śabda

śabda - sound, noise, word

वित्रस्ताः (vitrastāḥ) - greatly frightened, terrified

(adjective)

Nominative, masculine, plural of vitrasta

tras - to tremble, fear, be afraid

past passive participle

root tras (त्रस्) with prefix vi (वि)

Prefix: vi

Root: tras (class 4)

Note: acting as an adjective for tāvakāḥ

तावकाः (tāvakāḥ) - Dhṛtarāṣṭra's soldiers (your (people), your soldiers, those belonging to you)

(adjective)

Nominative, masculine, plural of tāvaka

tāvaka - your, thine, belonging to you

Note: Used as a noun

भरतर्षभ (bharatarṣabha) - addressed to Dhṛtarāṣṭra (O best of Bharatas)

(proper noun)

Vocative, masculine, singular of bharatarṣabha

bharatarṣabha - bull of the Bharatas, best of the Bharatas

Compound type : tatpuruṣa (bharata+ṛṣabha)

• bharata – a descendant of Bharata, name of an ancient king
  noun (masculine)
• ṛṣabha – bull, best, chief, excellent
  noun (masculine)

सिंहस्य (siṁhasya) - of a lion

(noun)

Genitive, masculine, singular of siṃha

siṁha - lion

इव (iva) - like, as, as if

(indeclinable)

मृगाः (mṛgāḥ) - deer, animals

(noun)

Nominative, masculine, plural of mṛga

mṛga - deer, wild animal, game

राजन् (rājan) - addressed to Dhṛtarāṣṭra (O king)

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

व्यद्रवन्त (vyadravanta) - they fled, they ran away

(verb)

3rd person , plural, active, past imperfect (laṅ) of vi-dru

imperfect

root dru (द्रु) with prefix vi (वि)

Prefix: vi

Root: dru (class 1)

महाभयात् (mahābhayāt) - from great fear

(noun)

Ablative, neuter, singular of mahābhaya

mahābhaya - great fear, great danger

Compound type : tatpuruṣa (mahā+bhaya)

• mahā – great, large, mighty
  adjective (feminine)
• bhaya – fear, dread, danger
  noun (neuter)