noun / verb
rabbet
RAB-uht/ˈræbət/
A recess cut along an edge, or the act of cutting it.
The board fits into a rabbet cut along the other board's edge.

Etymology
Rabat meant a recess or lower section, literally a “beating down or back.” That recessed-space sense survives in the groove that allows adjoining pieces to overlap.
In context
use the piece that's going to fit into the rabbet as a gauge align it with the edge of the panel and then just bring the jig right up to the other side check along the cut
More examples
- She rabbets the shelf edges with a router.
- He rabbeted the boards so their edges would overlap.
- The cabinet's back panel fits into rabbets along the sides.
Forms
rabbet · rabbets · rabbeted · rabbeting