'Legally' definitions:

Definition of 'legally'

From: WordNet
adverb
By law; conforming to the law; "we are lawfully wedded now" [syn: legally, lawfully, de jure] [ant: unlawfully]
adverb
In a legal manner; "he acted legally"

Definition of 'Legally'

From: GCIDE
  • Legally \Le"gal*ly\, adv. In a legal manner. [1913 Webster]