A solid modeling computer-aided design (CAD) software.
A set of five design principles in object-oriented programming (Single responsibility, Open-closed, Liskov substitution, Interface segregation, and Dependency inversion). VID-20150216-WA0030
In a technical or software context, "Solid" could refer to a few different things. A solid modeling computer-aided design (CAD) software
A popular, declarative JavaScript library for building user interfaces. VID-20150216-WA0030
Are you trying to this specific video, or are you asking about a functionality within a piece of software named Solid?
A web decentralization project led by Sir Tim Berners-Lee . It allows users to store their data in "Pods."