What is Patch ?
Patch is (noun) 1. a small piece of material used for covering up a hole His mother sewed a patch over the hole in his trousers. not a patch on someone or something not nearly as good as someone or something (informal.) This year’s model isn’t a patch on the old one. 2. a small area of something They built a shed on a patch of ground by the railway line. There’s a patch of rust on the car door. (verb) to repair something by attaching a piece of material over a hole Her jeans are all mended and patched. We patched the curtains with some material we had left over.
source: Easier English, Student Dictionary Upper Intermediate Level