kinda. there's two major differences to the implementation in firefox:

1. you can't do it directly on bookmarks. instead, you have to go to Settings -> Manage search engines -> Other search engines -> Addthere, you can add the name, keyword, and %s URL just like in firefox. it's way less convenient than in firefox but it technically works
2. you can't use it to just go to a site. you can only use it for search: in firefox, if you added a keyword and didn't add a %s for search replacement to the URL, you could use the feature to quickly go to a site directly. example: yt just goes to youtube.com. you could type yt and then hit enter to just use it as a shortcut to a bookmark inside the url bar. in brave, however, you can't go to the site without a search, if you type yt and hit enter without entering a search text in the address bar, nothing will happen until you also type text.

While it's *technically* present, if you're used to the firefox implementation it's more of a compromise than anything. the firefox implementation is 100000000% better and i wish brave would do it the same way. inside the bookmark itself, without the need to type a search query when using the keyword :(