Being very important, or key to something.
Having or containing the centre of something.
Being in the centre.
Exerting its action towards the peripheral organs.
centre
Of greatest importance; primary.
Being the first in time or in history.
Being one of the pieces of meat initially separated from the carcass during butchering, prior to division into smaller cuts.
A primal cut (of meat).
To take part in primal therapy.