Stardict Drae: 24 2 Bz2 Bz2
Extract it:
tar -xjvf drae-24-2.tar.bz2
This should produce files like:
If .dict is uncompressed, you can compress it to .dict.dz (optional, saves space): stardict drae 24 2 bz2 bz2
dictzip drae-24-2.dict
The file you've mentioned appears to be a dictionary file for use with StarDict. This kind of file would allow users to look up definitions and meanings of words in Spanish, drawing from the esteemed Diccionario de la Real Academia Española. Extract it: tar -xjvf drae-24-2
After extraction, you should have 3 files (same base name): This should produce files like: