原指吃洋菜、西餐，引申为尝试新鲜事物to try something new; to try foreign food

• 去年，边防站先后有5名干部品尝了第一次坐飞机“开洋荤”的滋味。

  Last year, five cadres at the border station had their first taste of flying on a plane.

• 村班子偏要开开洋荤，用外乡人交的租金和两年的救济款买了一辆桑塔纳。

  The village theatre troupe insisted on trying something new and used the rent from non-locals and two years of relief funds to buy a Santana.