堆积木

堆积木	duī jī mù	to play with stacking blocks
堆	duī	to pile up / to heap up / a mass / pile / heap / stack / large amount
堆积	duī jī	to pile up / to heap / accumulation
积	jī	to amass; to accumulate; to store up / (math.) product (the result of multiplication) / (TCM) constipation; indigestion
积木	jī mù	toy building blocks
木	Mù	surname Mu
木	mù	(bound form) tree / (bound form) wood / unresponsive; numb; wooden