spline Meaning, Definition & Usage

  1. noun a flexible strip (wood or rubber) used in drawing curved lines
  2. noun a thin strip (wood or metal)
    slat.

WordNet

Spline noun
Definitions
  1. A rectangular piece fitting grooves like key seats in a hub and a shaft, so that while the one may slide endwise on the other, both must revolve together; a feather; also, sometimes, a groove to receive such a rectangular piece.
  2. A long, flexble piece of wood sometimes used as a ruler.

Webster 1913