Definition of: gusset

(gus′it) noun
1. A small triangular piece of cloth fitted into a garment to fill an open angle or to give added strength or more room.
2. In metalworking, an angle–iron or bracket for stiffening an angle in construction.
3. A chain–mail connection between two armor plates.
—v.t. To furnish with a gusset. [<OF gousset, dim. of gousse a pod, shell]