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Webster 1913 Edition

Adj.

[See 1st

Abounding in mast; producing mast in abundance;

as, the

mastful

forest; a

mastful

chestnut.

Dryden.

Adj.

[from mast.] Abounding with mast, or fruit of oak, beech and other forest trees; as the mastful chestnut.

mastful ‎(comparative more mastful, superlative most mastful)

masty; producing mast
(Can we find and add a quotation of Dryden to this entry?)