Bible Dictionaries
Spline

Webster's Dictionary

(1):

(n.) A long, flexble piece of wood sometimes used as a ruler.

(2):

(n.) 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.

Bibliography Information
Webster, Noah. Entry for 'Spline'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/spline.html. 1828.