What's the technical term for a computer-friendly name of an entity: e.g. "Guns N' Roses" becomes guns_n_roses. This has nothing to to with escaping or sanitizing input, but with aesthetics - looking good in an url.
To clarify, in an "questions" table, you might have the following fields
Title: Computer-friendly name for entity Body: What's the technical term for a compu.... ???: computer-friendly-name-for-entity
There is a technical term, but I can't remember which. It's a noun, fairly short and (ahem) memorable.