I have to laugh at this one. I believe it is clearly metaphoric. Words do not become flesh. What I believe is that the "Word" which is God took on flesh so now the flesh speaks the "Word" as it enters the fleshly mind from the Spirit. (That is the way it works for me except that the Spirit does not always control my mind but in Jesus I would venture that it did.)
I would have to disagree, respectfully. There are multiple times, illustrated in the Bible, where words were made flesh and became into being for life as well as for death. The greatest of them all is when "God said" and Creation began.
Interestingly enough, science has found that all matter consists of waves lengths which both light and words have.
Matter Waves (not that this is the site where I read it but at the least it shows association.