The Collaborative International Dictionary of English v.0.48:

Sandwich \Sand"wich\, v. t. [imp. & p. p. Sandwiched; p. pr. &
   vb. n. Sandwiching.]
   To make into a sandwich; also, figuratively, to insert
   between portions of something dissimilar; to form of
   alternate parts or things, or alternating layers of a
   different nature; to interlard.
   [1913 Webster]