'Fielder' definitions:

Definition of 'fielder'

From: WordNet
noun
A member of the baseball team that is in the field instead of at bat
noun
A member of the cricket team that is fielding rather than batting [syn: fielder, fieldsman]

Definition of 'Fielder'

From: GCIDE
  • Fielder \Field"er\, n. (Ball Playing) A ball payer who stands out in the field to catch or stop balls. [1913 Webster]