'Besides' definitions:

Definition of 'besides'

From: WordNet
adverb
Making an additional point; anyway; "I don't want to go to a restaurant; besides, we can't afford it"; "she couldn't shelter behind him all the time and in any case he wasn't always with her" [syn: besides, in any case]
adverb
In addition; "he has a Mercedes, too" [syn: besides, too, also, likewise, as well]

Definition of 'Besides'

From: GCIDE
  • Besides \Be*sides"\, Beside \Be*side"\, adv. [OE. Same as beside, prep.; the ending -s is an adverbial one, prop. a genitive sign.]
  • 1. On one side. [Obs.] --Chaucer. Shak. [1913 Webster]
  • 2. More than that; over and above; not included in the number, or in what has been mentioned; moreover; in addition. [1913 Webster]
  • The men said unto Lot, Hast thou here any besides ? --Gen. xix. 12. [1913 Webster]
  • To all beside, as much an empty shade, An Eugene living, as a C[ae]sar dead. --Pope. [1913 Webster]
  • Note: These sentences may be considered as elliptical. [1913 Webster]

Definition of 'Besides'

From: GCIDE
  • Besides \Be*sides\, prep. Over and above; separate or distinct from; in addition to; other than; else than. See Beside, prep., 3, and Syn. under Beside. [1913 Webster]
  • Besides your cheer, you shall have sport. --Shak. [1913 Webster]

Synonyms of 'besides'

From: Moby Thesaurus