The Collaborative International Dictionary of English v.0.48:

Pinner \Pin"ner\, n.
   1. One who, or that which, pins or fastens, as with pins.
      [1913 Webster]

   2. (Costume)
      (a) A headdress like a cap, with long lappets.
      (b) An apron with a bib; a pinafore.
      (c) A cloth band for a gown. [Obs.]
          [1913 Webster]

                With kerchief starched, and pinners clean.
                                                  --Gay.
          [1913 Webster]

   3. A pin maker.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pinner \Pin"ner\, n. [See Pin to pound.]
   One who pins or impounds cattle. See Pin, v. t. [Obs.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

pinner
    n 1: a woman's cap with two long flaps pinned on