Answer:

piths

Answer	Crossword Clue
PITHS	Essential parts
PITHS	Essences
PITHS	Core substances

PITHS	Cores
PITHS	Marrows.
PITHS	Orange centers.
PITHS	Kernels.
PITHS	Soft centers
PITHS	Gists
PITHS	Hearts
PITHS	Main parts, as of arguments

PITHS	Quintessences

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.