Definition of board-and-batten
: wall construction that gives the appearance of wide vertical strips with intervening recesses or projections by means of (1) wide boards rabbeted on transverse edges and lapped not to the entire width of the rabbet on one side or (2) wide boards alternating with narrow and thin battens usually fitting into grooves in the wide boards or (3) wide boards covered at the seams by narrow usually 2-inch battens
