A tool used in woodworking to cut grooves or rabbets (rectangular notches) along the edge of wood.
From 'fillet' (a narrow strip or groove) with the agent suffix '-ster,' referring to a tool that creates fillets or grooves in woodwork.
A fillister is a specialized plane tool that creates perfectly uniform grooves—before power tools, carpenters relied on these handheld tools to make joints fit exactly right.
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