'Bystander' definitions:

Definition of 'bystander'

(from WordNet)
noun
A nonparticipant spectator

Definition of 'Bystander'

From: GCIDE
  • Bystander \By"stand`er\, n. [By + stander, equiv. to stander-by; cf. AS. big-standan to stand by or near.] One who stands near; a spectator; one who has no concern with the business transacting. [1913 Webster]
  • He addressed the bystanders and scattered pamphlets among them. --Palfrey. [1913 Webster]
  • Syn: Looker on; spectator; beholder; observer. [1913 Webster]