महाभारतः mahābhārataḥ - book-1, chapter-151, verse-21

हीयमानं तु तद्रक्षः समीक्ष्य भरतर्षभ ।
निष्पिष्य भूमौ पाणिभ्यां समाजघ्ने वृकोदरः ॥२१॥

21. hīyamānaṁ tu tadrakṣaḥ samīkṣya bharatarṣabha ,
niṣpiṣya bhūmau pāṇibhyāṁ samājaghne vṛkodaraḥ.

21. hīyamāṇam tu tat rakṣaḥ samīkṣya bharatarṣabha
niṣpiṣya bhūmau pāṇibhyām samājaghne vṛkodaraḥ

21. O best of Bharatas, seeing that demon becoming weaker, Bhima (Vṛkodara) pressed him onto the ground with his hands and struck him.

Words meanings summery:

• हीयमाणम् (hīyamāṇam) - becoming weaker, diminishing

• तु (tu) - but, indeed, however

• तत् (tat) - that (demon) (that)

• रक्षः (rakṣaḥ) - the demon, the Rākṣasa

• समीक्ष्य (samīkṣya) - having seen, having observed

• भरतर्षभ (bharatarṣabha) - O Dhritarashtra (common address in Mahabharata) (O best of Bharatas)

• निष्पिष्य (niṣpiṣya) - having crushed, having pressed down

• भूमौ (bhūmau) - on the ground, on the earth

• पाणिभ्याम् (pāṇibhyām) - with two hands

• समाजघ्ने (samājaghne) - struck, killed, assailed

• वृकोदरः (vṛkodaraḥ) - Bhima (Vṛkodara (Bhima's epithet))

Words meanings and morphology

हीयमाणम् (hīyamāṇam) - becoming weaker, diminishing

(adjective)

Accusative, masculine, singular of hīyamāṇa

hīyamāṇa - becoming weaker, diminishing, wasting away

Present Passive Participle

root hā (to abandon, to diminish) + ya (passive suffix) + māna (present participle suffix)

Root: hā (class 3)

तु (tu) - but, indeed, however

(indeclinable)

तत् (tat) - that (demon) (that)

(pronoun)

Accusative, neuter, singular of tad

tad - that, he, she, it

रक्षः (rakṣaḥ) - the demon, the Rākṣasa

(noun)

Accusative, neuter, singular of rakṣas

rakṣas - demon, Rākṣasa

समीक्ष्य (samīkṣya) - having seen, having observed

(indeclinable)

Absolutive (Gerund)

root īkṣ (to see) with upasarga sam, + ya suffix

Prefix: sam

Root: īkṣ (class 1)

भरतर्षभ (bharatarṣabha) - O Dhritarashtra (common address in Mahabharata) (O best of Bharatas)

(noun)

Vocative, masculine, singular of bharatarṣabha

bharatarṣabha - bull among Bharatas, best of Bharatas

Compound type : tatpuruṣa (bharata+ṛṣabha)

• bharata – descendant of Bharata (name of a king), an ancient king
  proper noun (masculine)
• ṛṣabha – bull, best, chief
  noun (masculine)

निष्पिष्य (niṣpiṣya) - having crushed, having pressed down

(indeclinable)

Absolutive (Gerund)

root piṣ (to crush) with upasarga niṣ, + ya suffix

Prefix: niṣ

Root: piṣ (class 7)

भूमौ (bhūmau) - on the ground, on the earth

(noun)

Locative, feminine, singular of bhūmi

bhūmi - earth, ground, land

पाणिभ्याम् (pāṇibhyām) - with two hands

(noun)

Instrumental, masculine, dual of pāṇi

pāṇi - hand

समाजघ्ने (samājaghne) - struck, killed, assailed

(verb)

3rd person , singular, middle, perfect (lit) of sam-ā-han

Perfect Middle

root han (to strike, to kill) with upasargas sam and ā, perfect tense, middle voice, 3rd person singular

Prefixes: sam+ā

Root: han (class 2)

वृकोदरः (vṛkodaraḥ) - Bhima (Vṛkodara (Bhima's epithet))

(proper noun)

Nominative, masculine, singular of vṛkodara

vṛkodara - wolf-bellied (epithet of Bhima), having a voracious appetite

Compound type : bahuvrīhi (vṛka+udara)

• vṛka – wolf
  noun (masculine)
• udara – belly, stomach
  noun (neuter)