Answer:

rabbet

Answer	Crossword Clue
RABBET	Carpentry groove
RABBET	Joint in carpentry
RABBET	Carpenter's cut.

RABBET	Groove
RABBET	Carpenter's joint
RABBET	Notch or groove in a board
RABBET	Joiner's groove
RABBET	Notch cut into a board

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.