Arranged in a neat, orderly pile or stack. The books were stacked neatly on the shelf.
Informal. (Of a woman) having large breasts; more generally, having a notably well-developed or muscular physique. The new recruit was seriously stacked after years of weight-training.
Deliberately arranged so as to give an unfair advantage or disadvantage; biased. The committee was stacked against the reformers from the very beginning.