the GNU version of the Collaborative International Dictionary of English
n. One who regrates.
The Century Dictionary and Cyclopedia
n. A retailer; a huckster; specifically, one who buys provisions and sells them, especially in the same market or fair.
Word Usage
"Next morning Doctor Unonius was called away from his breakfast to visit Sarah Puckey, an aged market woman or 'regrater,' whom he found in a state of prostration following (it was alleged) upon a severe nervous shock."