महाभारतः mahābhārataḥ - book-4, chapter-54, verse-8

ततः पार्थो महाबाहुः प्रहस्य स्वनवत्तदा ।
योजयामास नवया मौर्व्या गाण्डीवमोजसा ॥८॥

8. tataḥ pārtho mahābāhuḥ prahasya svanavattadā ,
yojayāmāsa navayā maurvyā gāṇḍīvamojasā.

8. tataḥ pārthaḥ mahābāhuḥ prahasya svanavat
tadā yojayāmāsa navayā maurvyā gāṇḍīvam ojasā

8. Then, the mighty-armed Arjuna, laughing sonorously at that time, strung his Gāṇḍīva bow with a new bowstring using his great might.

Words meanings summery:

• ततः (tataḥ) - then (then, therefrom, afterwards)

• पार्थः (pārthaḥ) - Arjuna (son of Pṛthā, Arjuna)

• महाबाहुः (mahābāhuḥ) - mighty-armed (epithet of Arjuna) (mighty-armed, one with great arms)

• प्रहस्य (prahasya) - having laughed heartily (having laughed, after laughing)

• स्वनवत् (svanavat) - sonorously (sounding, noisy, with sound)

• तदा (tadā) - at that time (then, at that time)

• योजयामास (yojayāmāsa) - he strung (the bow) (he strung, he applied, he yoked)

• नवया (navayā) - with a new (with new, fresh)

• मौर्व्या (maurvyā) - with a bowstring (with a bowstring, with a rope made of Muñja grass)

• गाण्डीवम् (gāṇḍīvam) - the Gāṇḍīva bow

• ओजसा (ojasā) - with his great might (with power, with might, with vigor)

Words meanings and morphology

ततः (tataḥ) - then (then, therefrom, afterwards)

(indeclinable)

पार्थः (pārthaḥ) - Arjuna (son of Pṛthā, Arjuna)

(proper noun)

Nominative, masculine, singular of pārtha

pārtha - son of Pṛthā; Arjuna

derived from Pṛthā (Kuntī)

महाबाहुः (mahābāhuḥ) - mighty-armed (epithet of Arjuna) (mighty-armed, one with great arms)

(adjective)

Nominative, masculine, singular of mahābāhu

mahābāhu - mighty-armed, one with great arms

Compound type : bahuvrihi (mahā+bāhu)

• mahā – great, large, vast
  adjective (feminine)
• bāhu – arm
  noun (masculine)

Note: Agrees with pārthaḥ

प्रहस्य (prahasya) - having laughed heartily (having laughed, after laughing)

(indeclinable)

absolutive/gerund

from pra + √has (1st class) + -ya suffix

Prefix: pra

Root: has (class 1)

स्वनवत् (svanavat) - sonorously (sounding, noisy, with sound)

(indeclinable)

possessive suffix -vat

from svan + -vat

तदा (tadā) - at that time (then, at that time)

(indeclinable)

from pronominal root tad + suffix -dā

योजयामास (yojayāmāsa) - he strung (the bow) (he strung, he applied, he yoked)

(verb)

3rd person , singular, active, past perfect (liṭ) of yojaya

past perfect (liṭ), causative

from √yuj (7th class) + causative suffix -aya + liṭ ending; periphrastic perfect with ām-ās

Root: yuj (class 7)

Note: Periphrastic perfect form

नवया (navayā) - with a new (with new, fresh)

(adjective)

Instrumental, feminine, singular of nava

nava - new, fresh, young, nine

Note: Agrees with maurvyā

मौर्व्या (maurvyā) - with a bowstring (with a bowstring, with a rope made of Muñja grass)

(noun)

Instrumental, feminine, singular of maurvī

maurvī - bowstring, rope made of Muñja grass

derived from mūrvā (a kind of plant)

गाण्डीवम् (gāṇḍīvam) - the Gāṇḍīva bow

(proper noun)

Accusative, neuter, singular of gāṇḍīva

gāṇḍīva - name of Arjuna's bow

ओजसा (ojasā) - with his great might (with power, with might, with vigor)

(noun)

Instrumental, neuter, singular of ojas

ojas - power, might, vigor, energy