steamer

noun

1.
a clam that is usually steamed in the shell
Derived from:
steam
2.
a cooking utensil that can be used to cook food by steaming it
Derived from:
steam
3.
a ship powered by one or more steam engines
Derived from:
steam steamer
4.
an edible clam with thin oval-shaped shell found in coastal regions of the United States and Europe