push-down queue

[Franceswah]

a queue in which the last item to go in is the first item to come out (LIFO)

[psycho]

A push-down queue, also known as a stack, is a type of data structure where elements are kept in order and where operations are performed at one end, called the top of the stack. It follows the Last In, First Out (LIFO) principle, meaning the last element added to the stack will be the first one to be removed. The primary operations include push (adding an element to the top) and pop (removing an element from the top).