A triangular wedge is a shape that looks like a slice of a triangle, with one narrow end and one wide end. It is similar to a slice of pizza or a wedge of cheese, but in the shape of a triangle. Full definition
A wedge pregnancy pillow is a small round or triangular wedge shape that is designed to go under the belly or back, or between the legs. (pregnancypillowguide.com)
Cut the eggplant slices in half to create triangular wedges and set aside. (busyinbrooklyn.com)
Pregnancy wedge pillows have two common designs: they are round pregnancy wedge pillow and triangular wedge pillow. (vjpillow.com)