Fourfold

·noun Four times as many or as much.

II. Fourfold ·adj & ·adv Four times; quadruple; as, a fourfold division.

III. Fourfold ·vt To make four times as much or as many, as an assessment,; to Quadruple.

to fourfold
To assess in a fourfold ratio. Mr. Pickering quotes this word from Webster's Dictionary, and observe...

Dictionary of American Words And Phrases by John Russell Bartlett.