柯林斯词典gneiss /naɪs/ 1. N any coarse-grained metamorphic rock that is banded and foliated: represents the last stage in the metamorphism of rocks before melting 片麻巖 返回 gneiss剑桥词典a type of metamorphic rock that contains light and dark layers formed of minerals such as quartz and mica 片麻巖（由長石﹑石英組成﹐中粗粒變晶結搆和片麻狀或條帶狀搆造的變質巖） 返回 gneiss