to take your own food to eat during the day, usually in a brown paper bag

中文解释

（通常放在牛皮纸袋里的）自带午餐 The park has become a place where office workers brown-bag it and take leisurely strolls. 公园成为办公室职员在那里吃自带午餐，然后悠闲散步的地方。