The Trash feature removes items without permanently deleting them. If you have placed a post or a page in the trash and would like to restore, view or permanently delete the post or page, from the dashboard select Posts or Pages and then click the trash link.
Here you will find a list of all the items you have placed in the trash within the last 30 days. Items left in the trash will be permanently deleted within 30 days. Hovering your mouse over an item placed in the trash will give you the option to delete the item permanently, never to be seen again, or restore the item back to the Posts or Pages section of your dashboard for immediate use.