Egg-on or Edge-on
. A corruption of the Saxon eggian (to incite). The Anglo-Saxon ecg, and Scandinavian eg, means a “sharp point”—hence edge-hog (hedgehog), a hog with sharp points, called in Danish pin-swin (thorny swine), and in French porc-épic, where épic is the Latin spicʹula (spikes).
· 
· 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Entry taken from
Dictionary of Phrase and Fable,
edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.