Whitaker's Words: https://latin-words.com/
Latin to English dictionary only.
Latinitium: https://latinitium.com/latin-dictionaries/
English to Latin or Latin to English dictionary.
Additional Resources.
Legentibus App: https://legentibus.com/
A great, interactive app full of Latin audiobooks. Students can follow along with the text as they listen and click on unfamiliar words for more information. The app tracks progress and sorts stories into difficulty levels, from beginner to advanced. It is a paid app.
Greeking Out Podcasts: https://podcasts.apple.com/us/podcast/greeking-out-from-national-geographic-kids/id1483233279
A super fun, free podcast available on Apple podcasts and Youtube. Engaging retellings of Greek (and other!) stories from the ancient world, geared towards kids.