rabbet
noun
[ ˈrabɪt ]
• a step-shaped recess cut along the edge or in the face of a piece of wood, typically forming a match to the edge or tongue of another piece; a rebate.
• "a rabbet joint"
rabbet
verb
• make a rebate in (a piece of wood).
Origin:
late Middle English: from Old French rabbat ‘abatement, recess’.