Answer: piths

AnswerCrossword Clue
PITHSEssential parts
PITHSEssences
PITHSCore substances
PITHSCores
PITHSMarrows.
PITHSOrange centers.
PITHSKernels.
PITHSSoft centers
PITHSGists
PITHSHearts
PITHSMain parts, as of arguments
PITHSQuintessences
pithsPITH, to sever the central nervous system of
pithsthe important part
pithsthe spongy central tissue in a plant stem