I'll give a contrived example:
Imagine that I wanted to list my Chrome extension on the Chrome Web Store under the title "Brad's Animal Names Extension" but I also wanted my extension to be revealed in the search results for "elephant".
Is there any way I can do this without renaming my extension as "Brad's Animal Names Extension Elephant"?
I was thinking about adding meta-tags in the manifest.json but haven't found any evidence this is possible.
I don't think meta tags are supported, but if you place the keyword in the description field, then that seems to work.
For example: