A woodworking tool with a narrow blade used to cut grooves, rabbets, or edge details in wood, also called a fillister plane.
Possibly from Old English or Dutch origins, the term emerged in woodworking trades; the spelling 'fillister' is also common, with unclear ultimate etymology but used since the 1600s.
A filister plane is so specialized that most people have never heard of it—but master carpenters use it to cut perfect grooves in wood frames, and old ones are now collector's items worth hundreds of dollars.
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