महाभारतः mahābhārataḥ - book-12, chapter-278, verse-18

आनतेनाथ शूलेन पाणिनामिततेजसा ।
पिनाकमिति चोवाच शूलमुग्रायुधः प्रभुः ॥१८॥

18. ānatenātha śūlena pāṇināmitatejasā ,
pinākamiti covāca śūlamugrāyudhaḥ prabhuḥ.

18. ānatenā atha śūlena pāṇinā amitatejasā
pinākam iti ca uvāca śūlam ugrāyudhaḥ prabhuḥ

18. atha amitatejasā ugrāyudhaḥ prabhuḥ pāṇinā
ānatenā śūlena śūlam pinākam iti ca uvāca

18. Then, with the trident bent by his hand, the Lord (Prabhu), whose weapon was fierce (Ugrāyudha) and who possessed immeasurable splendor, named the trident 'Pināka'.

Words meanings summery:

• आनतेना (ānatenā) - by the bent (trident) (by the bowed, by the bent)

• अथ (atha) - then, thereupon, now

• शूलेन (śūlena) - by the trident/spear

• पाणिना (pāṇinā) - by the hand, with the hand

• अमिततेजसा (amitatejasā) - by Shiva, who possessed immeasurable splendor (by the one of immeasurable splendor/might)

• पिनाकम् (pinākam) - Pināka (name of Shiva's bow/trident)

• इति (iti) - marks the preceding word as a quotation or name (thus, so saying)

• च (ca) - and, also

• उवाच (uvāca) - named, called (said, spoke)

• शूलम् (śūlam) - the spear, the trident

• उग्रायुधः (ugrāyudhaḥ) - Shiva, whose weapon (the trident) is fierce (whose weapon is fierce, fierce-weaponed)

• प्रभुः (prabhuḥ) - the Lord (Shiva) (the Lord, the master)

Words meanings and morphology

आनतेना (ānatenā) - by the bent (trident) (by the bowed, by the bent)

(adjective)

Instrumental, masculine, singular of ānata

ānata - bent, bowed, humble

Past Passive Participle

from `ā` + root `nam` + `kta` suffix

Prefix: ā

Root: nam (class 1)

Note: Agrees with `śūlena`.

अथ (atha) - then, thereupon, now

(indeclinable)

शूलेन (śūlena) - by the trident/spear

(noun)

Instrumental, masculine, singular of śūla

śūla - spear, pike, trident

पाणिना (pāṇinā) - by the hand, with the hand

(noun)

Instrumental, masculine, singular of pāṇi

pāṇi - hand

अमिततेजसा (amitatejasā) - by Shiva, who possessed immeasurable splendor (by the one of immeasurable splendor/might)

(adjective)

Instrumental, masculine, singular of amitatejas

amitatejas - of immeasurable splendor, infinitely powerful

Bahuvrihi compound: `amita` (immeasurable, unlimited) + `tejas` (splendor, power)

Compound type : bahuvrīhi (amita+tejas)

• amita – immeasurable, infinite, boundless
  adjective (masculine)
  past passive participle
  from `a` (neg.) + root `mā` (to measure) + `kta` suffix
  Prefix: a
  Root: mā (class 2)
• tejas – splendor, brilliance, energy, power, might
  noun (neuter)

Note: Agrees with `prabhuḥ` implicitly, describing Shiva.

पिनाकम् (pinākam) - Pināka (name of Shiva's bow/trident)

(proper noun)

Accusative, neuter, singular of pināka

pināka - Shiva's bow; also sometimes Shiva's trident

इति (iti) - marks the preceding word as a quotation or name (thus, so saying)

(indeclinable)

च (ca) - and, also

(indeclinable)

उवाच (uvāca) - named, called (said, spoke)

(verb)

3rd person , singular, active, past perfect (lit) of vac

Perfect

Root `vac`, Perfect Tense, 3rd person singular, active voice (irregular formation).

Root: vac (class 2)

शूलम् (śūlam) - the spear, the trident

(noun)

Accusative, masculine, singular of śūla

śūla - spear, pike, trident, spike

उग्रायुधः (ugrāyudhaḥ) - Shiva, whose weapon (the trident) is fierce (whose weapon is fierce, fierce-weaponed)

(adjective)

Nominative, masculine, singular of ugrāyudha

ugrāyudha - having a fierce weapon; an epithet of Shiva

Bahuvrihi compound: `ugra` (fierce) + `āyudha` (weapon)

Compound type : bahuvrīhi (ugra+āyudha)

• ugra – severe, fierce, terrible, mighty
  adjective (masculine)
• āyudha – weapon, implement
  noun (neuter)

Note: Refers to `prabhuḥ`.

प्रभुः (prabhuḥ) - the Lord (Shiva) (the Lord, the master)

(noun)

Nominative, masculine, singular of prabhu

prabhu - lord, master, mighty, able, powerful

from `pra` + root `bhū`

Prefix: pra

Root: bhū (class 1)