v. t.
v. i. To make notes or comments; -- with on or upon. [ 1913 Webster ]
n.
n. [ L. annotatio: cf. F. annotation. ] A note, added by way of comment, or explanation; -- usually in the plural;
n. An annotator. [ R. ] [ 1913 Webster ]
a. Characterized by annotations; of the nature of annotation. [ 1913 Webster ]
n. [ L. ] A writer of annotations; a commentator. [ 1913 Webster ]
a. Pertaining to an annotator; containing annotations. [ R. ] [ 1913 Webster ]