Full Idea
If we ask 'what must you know to understand a name?', the naïve answer is that one must know who or what it names - nothing more. (But no one would give this answer about what is needed to understand a definite description).
Gist of Idea
To understand a name (unlike a description) picking the thing out is sufficient?
Source
Robert C. Stalnaker (Reference and Necessity [1997], 4)
Book Reference
Stalnaker,Robert C.: 'Ways a World Might Be' [OUP 2003], p.176
A Reaction
Presumably this is naive because names can be full of meaning ('the Empress'), or description and reference together ('there's the man who robbed me') and so on. It's a nice starting point though. A number can serve as a name.