大螯虾，螯龙虾科的各种可食海生甲壳类动物，尤指螯龙虾属，有柄眼，长触须和五双腿，第一双腿变异为大钳

• any of several edible marine crustaceans of the family Homaridae,especially of the genus Homarus,having stalked eyes,long antennae,and five pairs of legs,the first pair of which is modified into large pincers