From Middle English chiken (also as chike > English chick), from Old English ċicen, ċycen, of uncertain origin. Possibly from Proto-West Germanic *kiukīn ("chicken"), or alternatively from Proto-West Germanic *kukkīn, equivalent to cock + -en. Compare North Frisian schückling ("chicken"), Saterland Frisian Sjuuken ("chicken"), Dutch kuiken ("chick, chicken"), German Low German Küken ("chick"), whence German Küken ("chick"), German Küchlein ("chick") and Old Norse kjúklingr ("chicken").