Webster's 1828 Dictionary
DOUBLING
ppr. Making twice the sum, number or quantity; repeating; passing round; turning to escape.
DOUBLING
n.The act of making double; also, a fold; a plait; also, an artifice; a shift.
Webster's 1913 Dictionary
DOUBLING
DOUBLING Dou "bling, n.
1. The act of one that doubles; a making double; reduplication; also, that which is doubled.
2. A turning and winding; as, the doubling of a hunted hare; shift; trick; artifice. Dryden.
3. (Her. )
Defn: The lining of the mantle borne about the shield or escutcheon.
4. The process of redistilling spirits, to improve the strength and flavor. Doubling a cape, promontory, etc. (Naut. ), sailing around or passing beyond a cape, promontory, etc.