堆叠

堆叠	duī dié	to pile up / to put layer upon layer / (Tw) (computing) stack
堆	duī	to pile up / to heap up / a mass / pile / heap / stack / large amount
叠	dié	variant of 叠
叠	dié	variant of 叠
叠	dié	to fold / to fold over in layers / to furl / to layer / to pile up / to repeat / to duplicate