Originally Posted By: Bigwig Rabbit
I say, let's invoke the Etymological Accords of Cornwall and Sandwich (1423), and declare the meaning as Gaius says because it is so much more interesting than just "one who toddles". Thus, henceforth, let it be known far and wide, that the etymology of "toddler" is, "one who drinks from a stein." There. The deed is done.

Since one who drinks enough from a stein will degenerate to toddling, why not?