In the context of website development or application development a wireframe black and white, deliberately simplified line drawing of the layout of a website or application.
This is sometimes mistakenly synonymous with website prototyping.
How are wireframes used?
Wireframing is one step in a professional website design process. It’s a time and cost-efficient method of scoping a project as opposed to making layout, behavior flow, and feature level changes later in the development process.