महाभारतः mahābhārataḥ - book-12, chapter-326, verse-81

ततो रक्षःपतिं घोरं पुलस्त्यकुलपांसनम् ।
हनिष्ये रावणं संख्ये सगणं लोककण्टकम् ॥८१॥

81. tato rakṣaḥpatiṁ ghoraṁ pulastyakulapāṁsanam ,
haniṣye rāvaṇaṁ saṁkhye sagaṇaṁ lokakaṇṭakam.

81. tataḥ rakṣaḥ-patim ghoram pulastya-kula-pāṃsanam
haniṣye rāvaṇam saṃkhye sa-gaṇam loka-kaṇṭakam

81. Then, in battle, I shall kill Rāvaṇa, that terrible lord of rākṣasas, the disgracer of Pulastya's lineage, and a menace to the world, along with his retinue.

Words meanings summery:

• ततः (tataḥ) - then, thereafter, thereupon

• रक्षः-पतिम् (rakṣaḥ-patim) - Rāvaṇa, as the lord of the rākṣasas (the lord of rākṣasas)

• घोरम् (ghoram) - terrible, formidable, dreadful

• पुलस्त्य-कुल-पांसनम् (pulastya-kula-pāṁsanam) - Rāvaṇa, who disgraced the lineage of his ancestor Pulastya (disgracer of Pulastya's lineage)

• हनिष्ये (haniṣye) - I shall kill

• रावणम् (rāvaṇam) - Rāvaṇa

• संख्ये (saṁkhye) - in battle, in war

• स-गणम् (sa-gaṇam) - Rāvaṇa, accompanied by his army/followers (with his host, together with his retinue)

• लोक-कण्टकम् (loka-kaṇṭakam) - Rāvaṇa, as a nuisance or enemy of the world/people (a thorn/menace to the world)

Words meanings and morphology

ततः (tataḥ) - then, thereafter, thereupon

(indeclinable)

Derived from `tad` with suffix `tas`

रक्षः-पतिम् (rakṣaḥ-patim) - Rāvaṇa, as the lord of the rākṣasas (the lord of rākṣasas)

(noun)

Accusative, masculine, singular of rakṣas-pati

rakṣas-pati - lord of rākṣasas, chief of demons

Compound type : genitive tatpuruṣa (rakṣas+pati)

• rakṣas – rākṣasa, demon, evil spirit
  noun (neuter)
• pati – lord, master, husband, ruler
  noun (masculine)

Note: Agrees with `rāvaṇam`

घोरम् (ghoram) - terrible, formidable, dreadful

(adjective)

Accusative, masculine, singular of ghora

ghora - terrible, frightful, dreadful, formidable, fierce

Note: Agrees with `rāvaṇam`

पुलस्त्य-कुल-पांसनम् (pulastya-kula-pāṁsanam) - Rāvaṇa, who disgraced the lineage of his ancestor Pulastya (disgracer of Pulastya's lineage)

(noun)

Accusative, masculine, singular of pulastya-kula-pāṃsana

pulastya-kula-pāṁsana - disgracer, defiler, or polluter of the family/lineage of Pulastya

Compound type : tatpuruṣa (pulastya+kula+pāṃsana)

• pulastya – Pulastya (name of one of the ten mind-born sons of Brahmā, and ancestor of Rāvaṇa)
  proper noun (masculine)
• kula – family, lineage, race, clan
  noun (neuter)
• pāṃsana – disgracer, defiler, polluter
  noun (masculine)
  agent noun
  Derived from root `pāṃs` (to dishonor, defile)
  Root: pāṃs (class 10)

Note: Agrees with `rāvaṇam`

हनिष्ये (haniṣye) - I shall kill

(verb)

1st person , singular, middle, future (lṛṭ) of han

Root: han (class 2)

रावणम् (rāvaṇam) - Rāvaṇa

(proper noun)

Accusative, masculine, singular of rāvaṇa

rāvaṇa - Rāvaṇa (the primary antagonist of the Rāmāyaṇa)

Note: Object of `haniṣye`

संख्ये (saṁkhye) - in battle, in war

(noun)

Locative, neuter, singular of saṃkhya

saṁkhya - battle, war, fight; enumeration, calculation

स-गणम् (sa-gaṇam) - Rāvaṇa, accompanied by his army/followers (with his host, together with his retinue)

(adjective)

Accusative, masculine, singular of sagaṇa

sagaṇa - accompanied by one's retinue/host, with a troop

Compound type : bahuvrīhi (sa+gaṇa)

• sa – with, together with
  indeclinable
• gaṇa – host, troop, retinue, collection, group
  noun (masculine)

Note: Agrees with `rāvaṇam`

लोक-कण्टकम् (loka-kaṇṭakam) - Rāvaṇa, as a nuisance or enemy of the world/people (a thorn/menace to the world)

(noun)

Accusative, masculine, singular of loka-kaṇṭaka

loka-kaṇṭaka - a thorn in the side of the world, a pest or menace to mankind

Compound type : genitive tatpuruṣa (loka+kaṇṭaka)

• loka – world, people, universe
  noun (masculine)
• kaṇṭaka – thorn, prickle, enemy, obstacle, menace, nuisance
  noun (masculine)

Note: Agrees with `rāvaṇam`