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store up

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store something up

to build up and lay away a supply of something. The bears will store fat up for the long winter. They store up fat for the winter.

See also: store, up

store up

v.

To accumulate and maintain a supply of something for future use: I recharged my phone battery to allow it to store up power for the long trip. Ants gather food all summer and store it up for the winter.

See also: store, up