वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-63, verse-6

तस्य तच्छुशुभे भूयः सशरं धनुरुत्तमम् ।
विद्युदैरावतार्चिष्मद्द्वितीयेन्द्रधनुर्यथा ॥६॥

6. tasya tacchuśubhe bhūyaḥ saśaraṃ dhanuruttamam ,
vidyudairāvatārciṣmaddvitīyendradhanuryathā.

6. tasya tat śuśubhe bhūyaḥ sa-śaram dhanuḥ uttamam
vidyut airāvata arciṣmat dvitīya indra-dhanuḥ yathā

6. His excellent bow, with its arrow, shone forth even more beautifully, like a second rainbow (indra-dhanuḥ) radiant with lightning and (Indra's elephant) Airāvata.

Words meanings summery:

• तस्य (tasya) - his, of him

• तत् (tat) - that

• शुशुभे (śuśubhe) - shone, appeared splendid

• भूयः (bhūyaḥ) - even more beautifully (again, further, more, greatly)

• स-शरम् (sa-śaram) - with an arrow, having an arrow

• धनुः (dhanuḥ) - bow

• उत्तमम् (uttamam) - excellent, best, supreme

• विद्युत् (vidyut) - lightning

• ऐरावत (airāvata) - Airāvata (Indra's elephant)

• अर्चिष्मत् (arciṣmat) - radiant, brilliant, shining

• द्वितीय (dvitīya) - second

• इन्द्र-धनुः (indra-dhanuḥ) - rainbow (lit. 'Indra's bow')

• यथा (yathā) - like, as, just as

Words meanings and morphology

तस्य (tasya) - his, of him

(pronoun)

Genitive, masculine, singular of tad

tad - that, he

Note: Refers to Kumbha (implied from previous verse).

तत् (tat) - that

(pronoun)

Nominative, neuter, singular of tad

tad - that

Note: Refers to dhanuḥ.

शुशुभे (śuśubhe) - shone, appeared splendid

(verb)

3rd person , singular, middle, perfect (lit) of śubh

Perfect

Perfect 3rd person singular, middle voice, root śubh

Root: śubh (class 1)

भूयः (bhūyaḥ) - even more beautifully (again, further, more, greatly)

(indeclinable)

Note: Adverb modifying śuśubhe.

स-शरम् (sa-śaram) - with an arrow, having an arrow

(adjective)

Nominative, neuter, singular of sa-śara

sa-śara - with an arrow, having an arrow

Compound type : bahuvrīhi (sa+śara)

• sa – with, accompanied by
  indeclinable
• śara – arrow
  noun (masculine)

Note: Refers to dhanuḥ.

धनुः (dhanuḥ) - bow

(noun)

Nominative, neuter, singular of dhanus

dhanus - bow, arc

Note: Subject of śuśubhe.

उत्तमम् (uttamam) - excellent, best, supreme

(adjective)

Nominative, neuter, singular of uttama

uttama - highest, best, excellent, supreme

Note: Refers to dhanuḥ.

विद्युत् (vidyut) - lightning

(noun)

Nominative, feminine, singular of vidyut

vidyut - lightning, flash of lightning

Note: In composition.

ऐरावत (airāvata) - Airāvata (Indra's elephant)

(proper noun)

Nominative, masculine, singular of airāvata

airāvata - Airāvata (name of Indra's elephant)

Note: In composition.

अर्चिष्मत् (arciṣmat) - radiant, brilliant, shining

(adjective)

Nominative, neuter, singular of arciṣmat

arciṣmat - radiant, brilliant, shining, fiery

Suffixed with -mat from arcis (radiance)

Note: In composition with `vidyut` and `airāvata` describing `indra-dhanuḥ`.

द्वितीय (dvitīya) - second

(adjective)

Nominative, neuter, singular of dvitīya

dvitīya - second, secondary

Note: Refers to indra-dhanuḥ.

इन्द्र-धनुः (indra-dhanuḥ) - rainbow (lit. 'Indra's bow')

(noun)

Nominative, neuter, singular of indra-dhanus

indra-dhanus - rainbow, Indra's bow

Compound type : genitive tatpuruṣa (indra+dhanus)

• indra – Indra (king of gods)
  proper noun (masculine)
• dhanus – bow
  noun (neuter)

Note: The subject of comparison, appearing like this.

यथा (yathā) - like, as, just as

(indeclinable)

Note: Used to introduce a simile.