cluster /ˈklʌstə/ I. n. ［c］ (果实，花等的)串，簇，(人或物等的)群，组：a cluster of grapes 一串葡萄；a new housing development in clusters 新建的房产开发区 ‖II.vi. 群集，丛生：cluster round the teacher 围着老师；cluster together for warmth挤在一起避寒