(~d)
1.
If you ~ a supply of something, you use it carefully so that it lasts for a long time.
The republic’s factories have closed for the weekend to ~ energy.
= save
VERB: V n
2.
To ~ something means to protect it from harm, loss, or change.
...a big increase in US aid to help developing countries ~ their forests.
= preserve
VERB: V n
3.
Conserve is jam containing a large proportion of fruit, usually in whole pieces.
N-MASS