DCCa piece of material that is stitched into a piece of clothing to make it stronger, wider, or more comfortable in a particular place 〔衣服的〕衬料
Examples from the Corpus
gusset• Cotton gussets were, quite literally, meat and drink to us.• A gore or gusset is, in fact, another name for a scoot.• Four or five horse-shoe buttons were sewn to this gusset as an extra decoration.