[Tutor] Deleting an entry from a dictionary

[Greg Lindstrom]

Hello-
This must be simple, but for the life of me I can't figure out how to 
delete an entry from a dictionary.  For example,

meals = {}
meals['breakfast'] = 'slimfast'
meals['lunch'] = 'slimfast'
meals['dinner'] = 'something sensible'

How do I eliminate 'lunch' from the dictionary so that I only have 
'breakfast' and 'dinner'?

Thanks!
--greg