![backfit backfit](https://www.tekportal.net/wp-content/uploads/2019/01/backfit-3831.jpg)
verb (used with object), back·fit or back·fit·ted, back·fit·ting.
- to update by providing new or improved equipment or features: a five-year program of installing new power plants and backfitting existing ones.
verb (used with object), back·fit or back·fit·ted, back·fit·ting.