Students and speakers of Gaelic, as well as anyone interested in Gaelic culture, will be pleased to discover that Dwelly's Dictionary is now available online. Dwelly's is not only a language resource, but is brimming with folklore and cultural bits. Definitely an essential, and now in searchable form.
Anns a' Ghàidhlig: Am faclair mòr Gàidhlig - Beurla aig Dwelly air an lìon
and In English: The online version of Dwelly's great Scots Gaelic - English dictionary