I used to be able to search
define:xyz on Google, where
xyz is a term I want defined. It's not working any more or it only shows one result and no link to see the rest. Here's an example:
I tried going to Search tools → All results, but I don't have the option dictionary.
I should say that it does return one result but it used to return more than 10 and for words such as "heat" clearly there are going to be more than one definition.
It seems to work from my home computer. Maybe this is a test/problem only affecting US users.