postil

Century Dictionary and Cyclopedia

1. n. A note or comment on some passage of Scripture, written in the margin of a Bible, and so called because it followed the text; any explanatory remark or comment on the text of the Bible; hence, any marginal note.
2. n. A series of comments, specifically on Scripture; a commentary, or written exposition.
3. n. A sermon or homily; specifically, a homily following and treating of the liturgical gospel; also, a collection of such homilies.
4. To write or deliver a postil.
5. To explain or illustrate by a postil.

Wiktionary

1. n. archaic A Bible commentary written in its margins.
2. n. A marginal note.
3. n. A short homily or commentary on a passage of Scripture.
4. n. A collection of homilies.
5. v. transitive To write marginal or explanatory notes on; to gloss.
6. v. intransitive To write postils, or marginal notes; to comment; to postillate.

GNU Webster's 1913

1. n. Originally, an explanatory note in the margin of the Bible, so called because written after the text; hence, a marginal note; a comment.
2. n. (R. C. Ch. & Luth. Ch.) A short homily or commentary on a passage of Scripture.
3. v. To write marginal or explanatory notes on; to gloss.
4. v. To write postils, or marginal notes; to comment; to postillate.