Crosswords Solver

Answer: keystones
Answer	Crossword Clue
KEYSTONES	Arch pieces
KEYSTONES	Main parts or principles.
KEYSTONES	Crucial elements

KEYSTONES	Linchpins
keystones	The central principle or part of a policy, system, etc., on which all else depends
keystones	A central stone at the summit of an arch, locking the whole together

Crossword

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

Answer: keystones