The essence; the best part.
The inner meaning or purpose.
The pith of certain plants.
Bone marrow biopsy.
The substance inside bones which produces blood cells.
A friend, pal, buddy, mate.
A kind of vegetable like a large courgette/zucchini or squash.
The essential part of anything; the most vital part.
Physical matter; material.
Material possessions; estate; property; resources.
Hypostasis.
Drugs (illegal narcotics)
Substantiality; solidity; firmness.
A form of matter that has constant chemical composition and characteristic properties.
To give substance to; to make real or substantial.