The Collaborative International Dictionary
Postilling
Postil \Pos"til\, v. i. [imp. & p. p. Postiled (?) or Postilled; p. pr. & vb. n. Postiling or Postilling.] To write postils, or marginal notes; to comment; to postillate.
Postiling and allegorizing on Scripture.
--J. H.
Newman.