#javascript bookmarklet tips code google script

javascript:function getSelectionText(){var e="";return window.getSelection?e=window.getSelection().toString():document.selection&&"Control"!=document.selection.type&&(e=document.selection.createRange().text),e}var text=getSelectionText();""!=text&&void window.open("https://www.google.com/search?q=define:"+text,"_blank");

Drag and drop the above code into your Bookmark bar and have quick access to word definitions!

Selection detection courtesy of Stackoverflow