With the dictionary command, you can get a short description of names and concepts from Tolkien's works.

Example:

dict dunadan      (shows some information about the word "Dúnadan")
dict              (shows the table of contents)

Some abbreviations used in the dictionaries:

Ad.     Adúnaic
K.      Khuzdul
Q.      Quenya
S.      Sindarin
sing.   singular
plur.   plural

Note: the dictionary is very far from complete right now