A Steam

1. The vapor formed when water changes from liquid phase to gas phase.
2. Pressurized water vapou used for heating, cooking, or to provide mechanical energy.
3. (figuratively) Internal energy for motive power.
4. (figuratively) Pent-up anger.
5. A steam-powered vehicle.
6. (obsolete) Any exhalation.
7. (fencing) Fencing without the use of any electric equipment.

(a steam-powered vehicle): steamer

(fencing): electric