/wee"veuhr/ , n.
1. either of two small, European, marine fishes of the genus Trachinus, T. draco (greater weever) or T. vipera (lesser weever) , having highly poisonous dorsal spines.
2. any fish of the same family, Trachinidae.
[ 1615-25; perh. continuing ME * wever, OE wifer arrow (c. ON vifr sword); modern meaning by assoc. with obs. wiver viper; see WYVERN ]