This thread is taking me back to my semester of Greek training at seminary. Like many ancient languages, early Greek has no spaces and little if any punctuation. Heck, you're lucky if the words don't change direction on you in the middle of a manuscript! On the other hand, this might be a benefit for the OP who would legitimately be able to call "γρηταχ" "great axe" and everyone else could go "greataxe" and neither would be wrong!
That was of course a phonetic spelling. I have no idea what the word would actually be.