To stock up

Related to To stock up: stack up
to extirpate; to dig up.

See also: Stock

References in periodicals archive ?
This week I went to K Mart to stock up on some sale items.
The foundation of the price image consists of approximately 2,100 items that are promoted with signs identifying them as "stock ups"--meaning they are such values that shoppers should take the opportunity to stock up on them.
Some spent more money in an effort to stock up in preparation