The Biblical baby name Javan is Hebrew in origin and it's meaning is clay, effervescing or from Greece. Javan is pronounced jaw-vawn'. Javan is the name of a man and a place mentioned in the Bible.Javan was the fourth son of Japheth, and grandson of Noah.he Biblical baby name Javan is Hebrew in origin and it's meaning is clay, effervescing or from Greece. Javan is pronounced jaw-vawn'. Javan is the name of a man and a place mentioned in the Bible. Javan was the fourth son of Japheth, and grandson of Noah.