मर्मन्

Sanskrit

मृ (mṛ, “to die, decease”) +‎ -मन् (-man). From Proto-Indo-European *mr̥meno-, abstract noun derived from the root *mer- (“to die, decease”). Compare Old Armenian մարմին (marmin, “body”).

मर्मन् • (márman) stem, n

mortal spot, vulnerable point, any open or exposed or weak or sensitive part of the body
the joint of a limb, any joint or articulation
the core of anything, the quick
any vital member or organ
anything which requires to be kept concealed, secret quality, hidden meaning, any secret or mystery

Neuter an-stem declension of मर्मन् (márman)
	Singular	Dual	Plural
Nominative	मर्म márma	मर्मणी mármaṇī	मर्माणि / मर्म¹ / मर्मा¹ mármāṇi / márma¹ / mármā¹
Vocative	मर्मन् / मर्म márman / márma	मर्मणी mármaṇī	मर्माणि / मर्म¹ / मर्मा¹ mármāṇi / márma¹ / mármā¹
Accusative	मर्म márma	मर्मणी mármaṇī	मर्माणि / मर्म¹ / मर्मा¹ mármāṇi / márma¹ / mármā¹
Instrumental	मर्मणा mármaṇā	मर्मभ्याम् mármabhyām	मर्मभिः mármabhiḥ
Dative	मर्मणे mármaṇe	मर्मभ्याम् mármabhyām	मर्मभ्यः mármabhyaḥ
Ablative	मर्मणः mármaṇaḥ	मर्मभ्याम् mármabhyām	मर्मभ्यः mármabhyaḥ
Genitive	मर्मणः mármaṇaḥ	मर्मणोः mármaṇoḥ	मर्मणाम् mármaṇām
Locative	मर्मणि / मर्मन्¹ mármaṇi / márman¹	मर्मणोः mármaṇoḥ	मर्मसु mármasu
Notes	¹Vedic

Monier Williams (1899) “मर्मन्”, in A Sanskrit–English Dictionary, , new edition, Oxford: At the Clarendon Press, →OCLC, page 791.