Meaning of file card

file' card"

Pronunciation: [key]
  1. a card of a size suitable for filing, typically 3 × 5 in. (7.62 × 12.7 cm) or 4 × 6 in. (10.16 × 15.24 cm).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.