Allegory - Vine's Expository Dictionary of New Testament Words
Allegory[ 1,,G238, allegoreo ]
translated in Galatians 4:24 contain an allegory" (AV, "are an allegory"), formed from allos, "other," and agoreuo, "to speak in a place of assembly" (agora, "the market-place"), came to signify "to speak," not according to the primary sense of the word, but so that the facts stated are applied to illustrate principles. The "allegorical" meaning does not do away with the literal meaning of the narrative. There may be more than one "allegorical" meaning though, of course, only one literal meaning. Scripture histories represent or embody spiritual principles, and these are ascertained, not by the play of the imagination, but by the rightful application of the doctrines of Scripture.