Steam \Steam\, v. i. [imp. & p. p. Steamed; p. pr. & vb. n. Steaming.]

1. To emit steam or vapor.

My brother's ghost hangs hovering there, O'er his warm blood, that steams into the air. --Dryden.

Let the crude humors dance In heated brass, steaming with fire intence. --J. Philips.

2. To rise in vapor; to issue, or pass off, as vapor.

The dissolved amber . . . steamed away into the air. --Boyle.

3. To move or travel by the agency of steam.

The vessel steamed out of port. --N. P. Willis.

4. To generate steam; as, the boiler steams well.

Source: Webster's Revised Unabridged Dictionary (1913)