मर्मन्

Etymology
From, abstract noun derived from the root. Compare 🇨🇬.

Noun

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