Top Definition
Similar to a Hill Jack. However, a field jack resides in the flat, corn producing lands of the midwest (most notably Indiana, Illinois, Iowa...).

A field jack could be heard saying something similar to "Boy...I'm gonna make you squeal like a pig."
Billy Bob is so very unintelligent and lacking goals in life that I believe him to be a field jack.
by Adam H. & Peter W. August 27, 2008
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