Noah Webster's New International Dictionary of the English Language

1. (p. pr. & vb. n.) of Double.

2. (n.) The act of one that doubles; a making double; reduplication; also, that which is doubled.

3. (n.) A turning and winding; as, the doubling of a hunted hare; shift; trick; artifice.

4. (n.) The lining of the mantle borne about the shield or escutcheon.

5. (n.) The process of redistilling spirits, to improve the strength and flavor.