Definition from Wiktionary, the free dictionary
fishplate (plural fishplates)
- (rail transport) A metal bar that is bolted to the ends of two rails to join them together in a track.
1901, Gipps, George, The Fighting in North China (up to the Fall of Tientsin City), Shanghai: Kelly and Walsh, OL 23299616M, page 40:
- (transitive, rail transport) To connect (rails) together using a fishplate.