Source : Webster's Revised Unabridged Dictionary (1913)

Inset \In*set"\, v. t.
   To infix. [Obs.] --Chaucer.

Inset \In"set\, n.
   1. That which is inserted or set in; an insertion.

   2. (Bookbinding) One or more separate leaves inserted in a
      volume before binding; as:
      (a) A portion of the printed sheet in certain sizes of
          books which is cut off before folding, and set into
          the middle of the folded sheet to complete the
          succession of paging; -- also called offcut.
      (b) A page or pages of advertisements inserted.

Source : WordNet®

inset
     n 1: a small picture inserted within the bounds or a larger one
     2: an artifact that is inserted or is to be inserted [syn: {insert}]
     3: a piece of material inset to strengthen or enlarge a garment
        [syn: {gusset}]
     v : set or place in
     [also: {insetting}]