Homepage: http://ergoemacs.org/emacs/xah-lookup.html
Updated:
Look up word on internet
This package provide commands for looking up the web of word under cursor. • xah-lookup-word-on-internet • xah-lookup-web • xah-lookup-wikipedia • xah-lookup-word-definition • xah-lookup-word-dict-org • xah-lookup-wiktionary • xah-lookup-etymology If there's a text selection (a phrase you want to lookup), these commands will lookup the selected text.