Tap on any verse and "Dictionaries" in the verse tap menu.
This displays a list of available entries from our dictionary and reference works. [Note: This tool is only available when your device is online.]
We have an impressive amount of works that we reference including:
Tap a reference work...
(Example: "Psalms, Book Of, 2")
For example, tap on "ASAPH"...
this brings up the ISBE definition of the word.
Do not forget that you can use the bottom navigation to go back to where you started.