bottom edge vs undersurface

bottom edge

noun

  • Used other than figuratively or idiomatically: see bottom, edge. 

  • A deflection of a ball off of the bottom edge of a bat, onto the ground and potentially into the wicket. 

  • The edge of a bat closest to the ground. 

verb

  • To hit the ball with the bottom edge of the bat. 

undersurface

noun

  • The underneath surface; the bottom, or underside 

How often have the words bottom edge and undersurface occurred in a corpus of books? (source: Google Ngram Viewer )