Definition: Fourfold; as, to make quadruple restitution; a quadruple
Definition: four times the sum or number; a fourfold amount; as, to
receive to quadruple of the amount in damages.
Definition: To multiply by four; to increase fourfold; to double;
to double twice.
Definition: To be multiplied by four; to increase fourfold; to
become four times as much.