If it doesn't indicate the part of speech next to the entry and make it usage abundantly clear, it is a crappy dictionary.
A very long time ago, I had one that for the English word "order" listed the following (going from memory here):
命令 (めいれい)
注文 (ちゅうもん)
順番 (じゅんばん)
with absolutely no indication of the extremely different meanings they have in Japanese.
Similar thing for the word "battery". They listed the Japanese words for "electrical battery", "artillery battery", and "butt whipping" with no indication of the differences.