dictionary   (Noun)

A reference book containing an alphabetical list of words, with information given for each word, usually including meaning, pronunciation, and etymology. A book listing the words of a language with translations into another language. A book listing words or other linguistic items in a particular category or subject with specialized information about them: a medical dictionary. Computer Science. A list of words stored in machine-readable form for reference, as by spelling-checking software. An electronic spelling checker.

Get me the medical dictionary I have no idea what he just said I'm dying to know.