The eCommerce edition of the CM Tooltip Glossary plugin supports a double click option for every term on your site.
Enabling the DoubleClick API call setting means that every-time a word or phrase is double-clicked anywhere on the page, a temporary tooltip will be displayed, containing the result of one of the services available in this option: Wikipedia, Amazon, Merriam Webster dictionary\ Thesaurus or Google Translate.
This term will not be saved nor added to the Glossary index.
https://www.cminds.com/wordpress-plugins-knowledge-base-and-documentation/?hscat=6-cm-tooltip