hagwormEtymologyInherited from Middle English hagworme (“viper”), from Old Norse hǫggormr (“serpent”), from hǫgg (“stroke, blow”) + ormr (“worm, snake”). Cognate with Icelandic höggormur (“poisonous snake, serpent”), Swedish huggorm (“adder, viper”).hagworm means A common snake, such as an adder or a viper. Lexicurio rates it Sui generis — a strength score of 88 out of 100.nounA common snake, such as an adder or a viper.A blindworm.