销蚀

销蚀	xiāo shí	to corrode; to erode; to wear away (lit. and fig.)
销	xiāo	to melt (metal) / to cancel; to annul / to sell / to expend; to spend / pin; bolt / to fasten with a pin or bolt
蚀	shí	to nibble away at sth / to eat into / to erode