They used a traditional winepress to crush the grapes for their family's homemade wine.

winepress 是复合名词，由 wine（葡萄酒）和 press（压榨机）组成。wine 指"葡萄酒"，press 指"压榨、压制用的机器"。winepress 合起来指专门用来压榨葡萄汁的传统工具，即"酒榨机"。