◙ noun 1. a large and mainly tropical grasshopper with strong powers of flight. It is usually solitary, but from time to time there is a population explosion and it migrates in vast swarms which cause extensive damage to crops • 蝗虫 2. Several species in the family Acrididae, including the migratory locust [Locusta migratoria] , which is sometimes seen in Europe • 数种见于蝗科，包括有时可见于欧洲的飞蝗（拉丁名Locusta migratory） [亦作seventeen-year locust] [US] the periodical cicada • [美] 周期蝉，十七年蝉 3. [亦作locust bean] the large edible pod of some plants of the pea family, in particular the carob bean, which is said to resemble a locust • 长角豆 4. [亦作locust tree] any of a number of pod-bearing trees of the pea family, in particular the carob tree and the false acacia • 长角豆树，洋槐，刺槐
【语源】
1. Middle English: via Old French locuste from Latin locusta 'locust, crustacean'