It means that the name doesn't have much flair, it's not a really outstanding name, it doesn't glitter and shine and make you sit up and notice!
You could have saved yourself the time by simply Googling "definition of pizzazz" and found this.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Thank you, for your help, my wonderful friends. I forgot about free dictionary.