There are two ways to search the Library catalog:
To find bilingual dictionaries use the Advanced Search and type the terms English, dictionaries, and the target language you're looking for (e.g., Swahili) into each of the search boxes. Or use Subject Headings following the formula in these examples:
French language -- dictionaries --German
To find monolingual dictionaries, do an Advanced Search using subject words "xxx language dictionaries" (e.g., Japanese language dictionaries)
To find multilingual dictionaries, do an Advanced Search using subject words "polyglot dictionaries". To limit these to a specific subject, you can also add another term such as law or medicine.
Try the same strategies as above but search using the option "topics".