Verb (5-dan, す, transitive)
1.  to destroy;  to demolish;  to pull down;  to tear down;  to level
2.  to disturb;  to put into disorder;  to throw off balance;  to make shaky
3.  to relax (one's pose);  to make oneself at ease
4.  to break (a bill);  to change;  to make change
oft. 札を崩す, etc.
5.  to write in cursive style;  to write in running style
oft. as 字を崩す
6.  to break into a smile;  to let off a smile
as 顔を崩す, etc.
7.  to lower (a price)