The Collaborative International Dictionary of English v.0.48:

Starch \Starch\, v. t. [imp. & p. p. Starched (st[aum]rcht);
   p. pr. & vb. n. Starching.]
   To stiffen with starch.
   [1913 Webster] Star chamber

The Collaborative International Dictionary of English v.0.48:

Starched \Starched\ (st[aum]rcht), a.
   1. Stiffened with starch.
      [1913 Webster]

   2. Stiff; precise; formal. --Swift.
      [1913 Webster]