Currently you can't create objects through CSV file. As a workaround, if you like create objects and fields without navigating through salesforce UI you can build a XML file in Force.com IDE and then push that into your org.
You cannot create objects and related fields in bulk. However, there are 2 simplified way: 1. Use schema builder. You can create object and fields just by few drag and drop. 2. Using XML as suggested in above above post.
As a workaround, if you like create objects and fields without navigating through salesforce UI you can build a XML file in Force.com IDE and then push that into your org.
Check this link to know more about the Force.com IDE - https://developer.salesforce.com/page/Force.com_IDE
1. Use schema builder. You can create object and fields just by few drag and drop.
2. Using XML as suggested in above above post.