Assuming you use the Author field as the “word” you can either change the Reference Type to reflect that and use the following in the Dictionary template (where the * is replaced by the “link adjacent” symbol. Or leave Word as Author and don’t bother with the Ref Type edit. (or use the title for the word and adjust the template accordingly).
Attached is an amended style APA 6th-dictionary.ens where the Ref Type for Dictionary was changed to replace the Author field name as Word.
Retrieved*Access Date|,*from*URL|*Word|. Year|.*In*Dictionary Title|.
resulting in this
Retrieved March 2, 2011, from http://www.merriam-webster.com/dictionary/hacker hacker. 2011. In Merriam-Webster.com.
APA 6th dictionary.ens (59.5 KB)