| n. | 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. |
| Noun | 1. | spline - a flexible strip (wood or rubber) used in drawing curved lines |
| 2. | spline - a thin strip (wood or metal) Synonyms: slat |