Yours, Etc.: Origins and Uses of 8 Sign-Offs
type of sea fish, c.1300, probably from Old English haca "a hook, door-fastening" (cf. hacod "pike" the fish), or Old Norse haki "hook," from the shape of its jaw, both from Proto-Germanic *hakan- (cf. Dutch hake "hook"), from PIE root *keg- "hook, tooth" (see hook).