In general, these dictionaries allow you to look up transliterated words in Japanese and get English definitions. A couple allow you to look up words phonetically in kana (such as Kodansha's furagana Japanese dictionary).
Many of materials are available only in the Reference Room in Seymour Library. The Reference Room is adjacent to the reference desk, directly across from the circulation desk.
Modern Reader's Japanese-English Character Dictionary by 
Shinpan Neruson Kan-Ei jiten = The new Nelson Japanese-English character dictionary by 
The Kanji dictionary by 
The Kodansha Kanji learner's dictionary by 
Kodansha's furigana Japanese dictionary: Japanese-English, English-Japanese by 
Kodansha's romanized Japanese-English dictionary by 
Ōkina katsuji no shin konsaisu Wa-Ei jiten = Sanseido's new concise Japanese-English dictionary by 
101 Japanese idioms : understanding Japanese language and culture through popular phrases by 
The handbook of Japanese verbs : Nihongo dōshi handobukku by 
The handbook of Japanese adjectives and adverbs by