Sandwich means what?

1762, said to be an allusion to John Montagu (1718-92), Fourth Earl Sandwich, who was said to be an inveterate gambler who ate slices of cold meat between bread at the gaming table during marathon sessions rather than get up for a proper meal (this account dates to 1770). It was in his honor that Cook named the Sandwich (Hawaiian) islands (1778) when Montagu was first lord of the Admiralty. The verb is from 1861. Sandwich board is from 1864. The family name is from the place in Kent, O.E. Sandwicæ, lit. "sandy harbor (or trading center)."