Patent ID: 7963727

Claim:
A retaining wall block having spaced-apart front and rear sections interconnected by two laterally spaced-apart side sections that jointly define a through-cavity that extends through the block from a top face thereof to a bottom face thereof, two or more protuberances that protrude outwardly from the top face of the front section frontwardly of the through-cavity, the protuberances having straight front sides and straight rear sides and being laterally spaced apart from one another with the straight rear sides thereof lying along a straight line, and a groove that extends laterally in the bottom face of the front section frontwardly of the through-cavity, the groove being located and dimensioned relative to the protuberances so that two blocks can be stacked one atop another in staggered relation with one or more protuberances of the lower block engaged with one but not both of a front wall and a rear wall of the groove of the upper block and the upper block set back with respect to the lower block.