בראשית מא:ה פירוש: רש״י, רשב״ם, Siftei Chakhamim וRav Hirsch

בקנה אחד ON ONE STALK— Tuyau in old French

בקנה אחד, this was a symbol of plenty, seeing that each stalk had seven ears of grain

Tudel in O.F. Rashi is saying that in O.F., a grain stalk is called tudel, although this also means a wooden reed. And so too it is in Hebrew.