Definify.com
Webster 1913 Edition
Postillate
Pos′til-late
,Verb.
T.
[LL.
postillatus
, p. p. of postillare
.] To explain by marginal notes; to postil.
Tracts . . .
postillated
by his own hand. C. Knight.
Pos′til-late
,Verb.
I.
1.
To write postils; to comment.
2.
To preach by expounding Scripture verse by verse, in regular order.