Sentence:  Do n't forget - when you take to the hills or the beach - that your cooler , which you might have <WSD>used</WSD> for wine - or beer-cooling on your terrace or back yard , is indispensable for carrying liquid refreshments . 
Meaning of the word marked with <WSD> tags:  put into service; make work or employ for a particular purpose or for its inherent or natural purpose