fish joint

noun

a connection formed by fishplates at the meeting point of two rails, beams, etc, as on a railway
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for fish joint

  • It is also known as a Fish-joint, and is a common form of splice.

    The Boy Craftsman|A. Neely Hall