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.
He addressed the bystanders and scattered pamphlets among them.
Syn. -- Looker on; spectator; beholder; observer.
© Webster 1913.