महाभारतः mahābhārataḥ - book-6, chapter-108, verse-15

ध्रुवमास्थाय बीभत्सुरुत्तमास्त्राणि संयुगे ।
अपास्यान्यान्रणे योधानभ्यस्यति पितामहम् ॥१५॥

15. dhruvamāsthāya bībhatsuruttamāstrāṇi saṁyuge ,
apāsyānyānraṇe yodhānabhyasyati pitāmaham.

15. dhruvam āsthāya bībhatsuḥ uttamāstrāṇi saṃyuge
apāsya anyān raṇe yodhān abhyasyati pitāmaham

15. saṃyuge bībhatsuḥ dhruvam āsthāya anyān raṇe
yodhān apāsya uttamāstrāṇi pitāmaham abhyasyati

15. Bibhatsu (Arjuna), firmly positioned in battle, disregards other warriors on the battlefield and directs his supreme weapons towards the Pitamaha (Bhishma).

Words meanings summery:

• ध्रुवम् (dhruvam) - firmly, steadily, certainly

• आस्थाय (āsthāya) - having taken one's stand, having resorted to, having adopted

• बीभत्सुः (bībhatsuḥ) - Arjuna (an epithet meaning 'one who hates terrible deeds') (abhorrent, disgusting; (as a proper noun) Arjuna)

• उत्तमास्त्राणि (uttamāstrāṇi) - excellent weapons, supreme missiles

• संयुगे (saṁyuge) - in battle, in combat

• अपास्य (apāsya) - having thrown away, having discarded, having set aside

• अन्यान् (anyān) - other (ones), different (ones)

• रणे (raṇe) - in battle, in war

• योधान् (yodhān) - warriors, fighters

• अभ्यस्यति (abhyasyati) - practices, aims at, directs, focuses on

• पितामहम् (pitāmaham) - Bhishma, the grandfather (the grandfather, Bhishma)

Words meanings and morphology

ध्रुवम् (dhruvam) - firmly, steadily, certainly

(indeclinable)

Root: dhruv (class 1)

Note: Used adverbially.

आस्थाय (āsthāya) - having taken one's stand, having resorted to, having adopted

(indeclinable)

Absolutive (Gerund)

From root STHĀ (to stand) with prefix Ā, + -YA suffix

Prefix: ā

Root: sthā (class 1)

Note: Absolutive verb form.

बीभत्सुः (bībhatsuḥ) - Arjuna (an epithet meaning 'one who hates terrible deeds') (abhorrent, disgusting; (as a proper noun) Arjuna)

(proper noun)

Nominative, masculine, singular of bībhatsu

bībhatsu - disgusting, abhorrent; (as a proper noun) Arjuna (one who hates terrible deeds)

Desiderative stem of root BHAJ (to divide, share) or BHĪ (to fear), or from root BHE (to be afraid) + -san suffix, then U-stem. Used as an epithet for Arjuna.

Root: bhe/bhaj

Note: Arjuna's epithet.

उत्तमास्त्राणि (uttamāstrāṇi) - excellent weapons, supreme missiles

(noun)

Accusative, neuter, plural of uttamāstra

uttamāstra - excellent weapon, supreme missile

Compound type : tatpurusha (uttama+astra)

• uttama – best, excellent, supreme
  adjective (masculine)
• astra – weapon, missile
  noun (neuter)
  Root: as (class 4)

संयुगे (saṁyuge) - in battle, in combat

(noun)

Locative, masculine, singular of saṃyuga

saṁyuga - battle, combat, conflict

From root YUJ (to join) with prefix SAM.

Prefix: sam

Root: yuj (class 7)

अपास्य (apāsya) - having thrown away, having discarded, having set aside

(indeclinable)

Absolutive (Gerund)

From root AS (to throw) with prefix APA, + -YA suffix

Prefix: apa

Root: as (class 4)

Note: Absolutive verb form.

अन्यान् (anyān) - other (ones), different (ones)

(pronoun)

Accusative, masculine, plural of anya

anya - other, different, distinct

रणे (raṇe) - in battle, in war

(noun)

Locative, masculine, singular of raṇa

raṇa - battle, war, combat

Root: raṇ (class 1)

योधान् (yodhān) - warriors, fighters

(noun)

Accusative, masculine, plural of yodha

yodha - fighter, warrior, soldier

From root YUDH (to fight)

Root: yudh (class 4)

अभ्यस्यति (abhyasyati) - practices, aims at, directs, focuses on

(verb)

3rd person , singular, active, present (laṭ) of abhyas

Present Tense, Active Voice, Parasmaipada

From root AS (to throw) with prefixes ABHI and A. Or from root ABHI + AS.

Prefixes: abhi+ā

Root: as (class 4)

Note: Used transitively with 'uttamāstrāṇi' and 'pitāmaham'.

पितामहम् (pitāmaham) - Bhishma, the grandfather (the grandfather, Bhishma)

(proper noun)

Accusative, masculine, singular of pitāmaha

pitāmaha - paternal grandfather; Brahma (as a proper noun); Bhishma (as a proper noun)

Note: Refers to Bhishma.