A surname.

(Australia) Clipping of stacks on the mill.

(chiefly UK) to fall over, to topple

plural of stackful

Enough to fill or form a stack.

(programming) Using a stack (last-in-first-out data structure).

(poker) Having a short stack.

(poker) Having a deep stack

(rare, grammar) A double modal (or, rarely, any string of multiple modals, e.g. a triple modal).

plural of stacked modal