轍てっ叉さ

noun

railway frog

Technical term in railway engineering for the crossing point of two rails where the flanges of train wheels pass through.

• 轍てっ叉さの摩ま耗もうを定てい期き的てきに点てん検けんする必ひつ要ようがある。

  It is necessary to regularly inspect the wear of the railway frog.