Toy Building Block

FIG. 1 is a top perspective view of a toy building block, showing my new design;

FIG. 2 is a front elevational view thereof, the rear elevational view, left-side elevational view, and right-side elevational view all being identical thereto;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a cross-sectional view thereof, taken along line 5 -- 5 of FIG. 3 ;

FIG. 6 is a cross-sectional view thereof, taken along line 6 -- 6 of FIG. 3 ; and,

FIG. 7 is a bottom perspective view thereof.