The power produced by a machine using pressurized water vapor, Steam heating, Water in a visible vesicular condition produced by the condensation of vapor of water in air, intransitive verb_ To rise in vapor; to issue, or pass off, as vapor, To move or travel by the agency of steam, To produce or emit steam, transitive verb_ To expose to the action of steam; to apply steam to for softening, dressing, or preparing, obsolete To exhale