The Memodack plugin helps users memorize words and phrases directly within Obsidian by integrating translation and text-to-speech features. It provides a simple syntax for defining words and their translations, allowing users to study language content efficiently. The plugin supports Google Cloud Translation and Text-to-Speech services, enabling users to quickly translate and hear words with a customizable hotkey. Users can practice their vocabulary using an interactive flashcard-style mode, accessible from the ribbon menu or command palette.