stack
verb [ T ]
uk/stæk/ usstack shelves
COMMERCE
to work in a supermarket putting products on shelves:
She's got a part-time job stacking shelves in the local superstore.
See also
shelf stacker
Phrasal verb
stack up
stack
noun [ C ]
uk/stæk/ usa large pile of something such as letters:
I have a stack of invoices to process this afternoon.
IT
a method of storing information on a computer in which the most recent item is found or dealt with before other items:
It is possible to search the stack for an item and find out how far it is from the top.