महाभारतः mahābhārataḥ - book-7, chapter-113, verse-18

जातरूपपरिष्कारैर्धनुर्भिः सुमहाधनैः ।
सुवर्णपुङ्खैरिषुभिर्नाराचैश्च सहस्रशः ॥१८॥

18. jātarūpapariṣkārairdhanurbhiḥ sumahādhanaiḥ ,
suvarṇapuṅkhairiṣubhirnārācaiśca sahasraśaḥ.

18. jātarūpapariskāraiḥ dhanurbhiḥ sumahādhanaiḥ
suvarṇapuṅkhaiḥ iṣubhiḥ nārācaiḥ ca sahasraśaḥ

18. sahasraśaḥ jātarūpapariskāraiḥ sumahādhanaiḥ
dhanurbhiḥ suvarṇapuṅkhaiḥ iṣubhiḥ nārācaiḥ ca

18. The river was also covered by thousands of exceedingly valuable bows adorned with gold, by gold-feathered arrows, and by iron arrows.

Words meanings summery:

• जातरूपपरिस्कारैः (jātarūpapariskāraiḥ) - with adornments of gold, with golden decorations

• धनुर्भिः (dhanurbhiḥ) - with bows

• सुमहाधनैः (sumahādhanaiḥ) - exceedingly valuable, very costly

• सुवर्णपुङ्खैः (suvarṇapuṅkhaiḥ) - with gold-feathered (arrows), with gold-shafted

• इषुभिः (iṣubhiḥ) - with arrows

• नाराचैः (nārācaiḥ) - with iron arrows, with steel arrows

• च (ca) - and, also

• सहस्रशः (sahasraśaḥ) - by thousands, in thousands

Words meanings and morphology

जातरूपपरिस्कारैः (jātarūpapariskāraiḥ) - with adornments of gold, with golden decorations

(noun)

Instrumental, masculine, plural of jātarūpapariskāra

jātarūpapariskāra - golden adornment, decoration of gold

Compound type : tatpurusha (jātarūpa+pariskāra)

• jātarūpa – gold, natural form, beautiful form
  noun (neuter)
• pariskāra – adornment, decoration, equipment, preparation
  noun (masculine)

धनुर्भिः (dhanurbhiḥ) - with bows

(noun)

Instrumental, neuter, plural of dhanus

dhanus - bow

सुमहाधनैः (sumahādhanaiḥ) - exceedingly valuable, very costly

(adjective)

Instrumental, neuter, plural of sumahādhana

sumahādhana - very valuable, possessing great wealth

Compound type : bahuvrihi (su+mahā+dhana)

• su – good, excellent, very, well
  indeclinable
  Intensifying prefix
• mahā – great, large, mighty
  adjective (feminine)
• dhana – wealth, riches, valuable possession
  noun (neuter)

सुवर्णपुङ्खैः (suvarṇapuṅkhaiḥ) - with gold-feathered (arrows), with gold-shafted

(adjective)

Instrumental, masculine, plural of suvarṇapuṅkha

suvarṇapuṅkha - having gold-feathers or gold-shafts (of an arrow)

Compound type : bahuvrihi (suvarṇa+puṅkha)

• suvarṇa – gold
  noun (neuter)
• puṅkha – feather (of an arrow), shaft-end
  noun (masculine)

इषुभिः (iṣubhiḥ) - with arrows

(noun)

Instrumental, masculine, plural of iṣu

iṣu - arrow

नाराचैः (nārācaiḥ) - with iron arrows, with steel arrows

(noun)

Instrumental, masculine, plural of nārāca

nārāca - iron arrow, steel arrow

च (ca) - and, also

(indeclinable)

सहस्रशः (sahasraśaḥ) - by thousands, in thousands

(indeclinable)

From 'sahasra' (thousand) with suffix 'śas' indicating measure or distribution