Source : Webster's Revised Unabridged Dictionary (1913)

Sandwich \Sand"wich\ (?; 277), n. [Named from the Earl of
   Sandwich.]
   Two pieces of bread and butter with a thin slice of meat,
   cheese, or the like, between them.

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.

Source : WordNet®

sandwich
     n : two (or more) slices of bread with a filling between them

sandwich
     v 1: make into a sandwich
     2: insert or squeeze tightly between two people or objects;
        "She was sandwiched in her airplane seat between two fat
        men"