If the dictionary of the KJB is to be really attempted, we would have to begin by eliminating the bias toward Webster. Moreover, old works, such as W. A. Wright's book must be utalised. Have a look:
http://books.google.com.au/books?id=cbcCAAAAQAAJ
I will now give several examples in relation to understanding the exactness of KJB words:
Alway and Always
The word “always” means “at every time” and “on every occasion”. Whereas the word “alway” means “all the time” and “perpetually”. For example, Jesus said, “lo, I am with you alway, even unto the end of the world. Amen.” (Matthew 28:20b). Yet He also said, “but me ye have not always.” (John 12:8b). This is not a contradiction, since John is describing Jesus’ personal physical presence. Even though Jesus is not “always” on Earth by His own physical person, yet He is “alway” with His people on the Earth by the Holy Ghost.
A second example:
Divers and Diverse
The word “divers”, meaning differing, always applies to plural things, for example, seeds, weights, measures, colours, kinds, sorts or diseases. The word “diverse” means different, and is singular, for example, “And they gave them drink in vessels of gold, (the vessels being diverse one from another,) and royal wine in abundance, according to the state of the king.” (Esther 1:7). This shows the accuracy in the word forms in the King James Bible that is not present in modern versions.
A third example:
Stablish and Establish
According to the Oxford English Dictionary, the main meaning of the word “stablish” is, “To place or set firmly in position; to station in a place.” This is not exactly the same as “establish”, which firstly means, “To render stable or firm”. Consider Psalm 93:1b, 2a, “the world also is stablished, that it cannot be moved. Thy throne is established of old”. The Psalmist is showing that the world is placed by God, while God’s throne has been made to have internal strength to endure for a long time. Although similar, these words have different meanings, and are used accurately in many places throughout the King James Bible.
Moreover, there is some revelation, these "glistering truths" which go beyond just a normal dictionary... like the difference between "vail" and "veil".