महाभारतः mahābhārataḥ - book-7, chapter-57, verse-16

पार्थ पाशुपतं नाम परमास्त्रं सनातनम् ।
येन सर्वान्मृधे दैत्याञ्जघ्ने देवो महेश्वरः ॥१६॥

16. pārtha pāśupataṁ nāma paramāstraṁ sanātanam ,
yena sarvānmṛdhe daityāñjaghne devo maheśvaraḥ.

16. pārtha pāśupataṃ nāma paramāstraṃ sanātanam yena
sarvān mṛdhe daityān jaghne devaḥ maheśvaraḥ

16. pārtha,
pāśupataṃ nāma sanātanam paramāstraṃ (asti).
yena devaḥ maheśvaraḥ mṛdhe sarvān daityān jaghne.

16. O Partha (Arjuna), there is a supreme and eternal weapon (astra) called Pāśupata, by which the god Maheśvara (Shiva) slew all the demons in battle.

Words meanings summery:

• पार्थ (pārtha) - Krishna addressing Arjuna (O Partha, O Arjuna)

• पाशुपतम् (pāśupatam) - The divine weapon associated with Shiva (Paśupati) (Pāśupata (weapon))

• नाम (nāma) - indicating the name of the weapon (named, by name)

• परमास्त्रम् (paramāstram) - the most powerful and divine weapon (supreme weapon (astra))

• सनातनम् (sanātanam) - referring to the ancient and timeless nature of the weapon (eternal, ancient, everlasting)

• येन (yena) - by means of the Pāśupata weapon (by which, with which)

• सर्वान् (sarvān) - all the demons (all, everyone)

• मृधे (mṛdhe) - during actual warfare (in battle, in combat)

• दैत्यान् (daityān) - the demonic adversaries of the gods (demons, sons of Diti)

• जघ्ने (jaghne) - Maheśvara killed (slew, killed)

• देवः (devaḥ) - Shiva, the great god (god, deity)

• महेश्वरः (maheśvaraḥ) - Lord Shiva (Maheśvara, great lord)

Words meanings and morphology

पार्थ (pārtha) - Krishna addressing Arjuna (O Partha, O Arjuna)

(proper noun)

Vocative, masculine, singular of pārtha

pārtha - son of Pṛthā (Kuntī), Arjuna

Derived from Pṛthā + aṇ affix.

Note: Address to Arjuna.

पाशुपतम् (pāśupatam) - The divine weapon associated with Shiva (Paśupati) (Pāśupata (weapon))

(adjective)

Nominative, neuter, singular of pāśupata

pāśupata - belonging to Paśupati (Shiva); the weapon of Shiva

From Paśupati + aṇ affix.

Note: Predicative adjective.

नाम (nāma) - indicating the name of the weapon (named, by name)

(indeclinable)

Adverbial usage.

Note: Adverb.

परमास्त्रम् (paramāstram) - the most powerful and divine weapon (supreme weapon (astra))

(noun)

Nominative, neuter, singular of paramāstra

paramāstra - supreme weapon, ultimate missile

Compound type : karmadhāraya (parama+astra)

• parama – supreme, highest, excellent
  adjective
  Superlative of para.
• astra – missile, weapon (especially one discharged by magical incantation)
  noun (neuter)
  From root as (to throw).
  Root: as (class 4)

Note: Predicate nominative.

सनातनम् (sanātanam) - referring to the ancient and timeless nature of the weapon (eternal, ancient, everlasting)

(adjective)

Nominative, neuter, singular of sanātana

sanātana - eternal, perpetual, ancient, primeval

From sadā (always) + tana (suffix).

Note: Qualifies 'paramāstraṃ'.

येन (yena) - by means of the Pāśupata weapon (by which, with which)

(pronoun)

Instrumental, neuter, singular of yad

yad - which, who, what

Relative pronoun.

Note: Refers to 'paramāstraṃ'.

सर्वान् (sarvān) - all the demons (all, everyone)

(pronoun)

Accusative, masculine, plural of sarva

sarva - all, every, whole

Pronominal adjective.

Note: Qualifies 'daityān'.

मृधे (mṛdhe) - during actual warfare (in battle, in combat)

(noun)

Locative, feminine, singular of mṛdh

mṛdh - battle, combat, contest

Root: mṛdh (class 1)

Note: Adverbial locative.

दैत्यान् (daityān) - the demonic adversaries of the gods (demons, sons of Diti)

(noun)

Accusative, masculine, plural of daitya

daitya - a demon, son of Diti

Derived from Diti + ya affix.

Note: Object of 'jaghne'.

जघ्ने (jaghne) - Maheśvara killed (slew, killed)

(verb)

3rd person , singular, middle, perfect (liṭ) of jaghne

Perfect tense

Reduplicated perfect, 3rd person singular, middle voice.

Root: han (class 2)

Note: Main verb of the subordinate clause.

देवः (devaḥ) - Shiva, the great god (god, deity)

(noun)

Nominative, masculine, singular of deva

deva - god, deity, divine being

From root div (to shine).

Root: div (class 1)

Note: Qualifies 'Maheśvaraḥ'.

महेश्वरः (maheśvaraḥ) - Lord Shiva (Maheśvara, great lord)

(proper noun)

Nominative, masculine, singular of maheśvara

maheśvara - Great Lord, an epithet of Shiva

Compound type : karmadhāraya (mahā+īśvara)

• mahā – great, large, mighty
  adjective
• īśvara – lord, master, ruler, god
  noun (masculine)
  From root īś (to rule).
  Root: īś (class 2)

Note: Subject of 'jaghne'.