What is a common noun for Blondie?

There isn't a single common noun that perfectly captures the meaning of "Blondie" because it can refer to several things:

1. A person with blonde hair: In this case, "blonde" itself is the common noun.

2. The American rock band Blondie: You could use "band" or "musical group."

3. A comic strip character: You could use "character" or "comic strip character."

4. A type of bread: You could use "bread" or "sweet bread."

So, the best common noun for "Blondie" depends on the context.