Doubling

Definition:

(p. pr. & vb. n.) of Double
(n.) The act of one that doubles; a making double; reduplication; also, that which is doubled.
(n.) A turning and winding; as, the doubling of a hunted hare; shift; trick; artifice.
(n.) The lining of the mantle borne about the shield or escutcheon.
(n.) The process of redistilling spirits, to improve the strength and flavor.

Compare doubling with other words:

doubling vs. doubting