steam·er /ˈstimɚ/
 汽船,蒸汽機
 Steam·er n.
 1. A vessel propelled by steam; a steamship or steamboat.
 2. A steam fire engine. See under Steam.
 3. A road locomotive for use on common roads, as in agricultural operations.
 4. A vessel in which articles are subjected to the action of steam, as in washing, in cookery, and in various processes of manufacture.
 5. Zool. The steamer duck.
 Steamer duck Zool., a sea duck (Tachyeres cinereus), native of Patagonia and Terra del Fuego, which swims and dives with great agility, but which, when full grown, is incapable of flight, owing to its very small wings.  Called also loggerhead, race horse, and side-wheel duck.
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 steamer
      n 1: a clam that is usually steamed in the shell [syn: soft-shell
           clam, steamer clam, long-neck clam]
      2: a cooking utensil that can be used to cook food by steaming
         it
      3: a ship powered by one or more steam engines [syn: steamship]
      4: an edible clam with thin oval-shaped shell found in coastal
         regions of the United States and Europe [syn: soft-shell
         clam, steamer clam, long-neck clam, Mya arenaria]