'Lastly' definitions:

Definition of 'lastly'

From: WordNet
adverb
The item at the end; "last, I'll discuss family values" [syn: last, lastly, in conclusion, finally]

Definition of 'Lastly'

From: GCIDE
  • Lastly \Last"ly\, adv.
  • 1. In the last place; in conclusion. [1913 Webster]
  • 2. at last; finally. [1913 Webster]