The Collaborative International Dictionary of English v.0.48:

Steam \Steam\ (st[=e]m), v. i. [imp. & p. p. Steamed
   (st[=e]md); p. pr. & vb. n. Steaming.]
   1. To emit steam or vapor.
      [1913 Webster]

            My brother's ghost hangs hovering there,
            O'er his warm blood, that steams into the air.
                                                  --Dryden.
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            Let the crude humors dance
            In heated brass, steaming with fire intense. --J.
                                                  Philips.
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   2. To rise in vapor; to issue, or pass off, as vapor.
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            The dissolved amber . . . steamed away into the air.
                                                  --Boyle.
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   3. To move or travel by the agency of steam.
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            The vessel steamed out of port.       --N. P.
                                                  Willis.
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   4. To generate steam; as, the boiler steams well.
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WordNet (r) 3.0 (2006):

steaming
    adv 1: (used of heat) extremely; "the casserole was piping hot"
           [syn: piping, steaming]
    adj 1: filled with steam or emitting moisture in the form of
           vapor or mist; "a steaming kettle"; "steamy towels" [syn:
           steaming, steamy]