a supply of a commodity not needed for immediate use but available if required.
Australia has major coal, gas, and uranium reserves
a place set aside for special use, in particular.
There are areas where land has been put aside for reserves but are now being used for different things.
a lack of warmth or openness in manner or expression.
she smiled and some of her natural reserve melted
(in the decoration of ceramics or textiles) an area that still has the original color of the material or the color of the background.
Penwork decoration, with designs in reserves on a black background, may itself have first developed within the Tunbridge ware industry.