intransitive. To evaporate; to rise as vapour; to give off vapour. Obsolete.

intransitive. To emit fumes, smoke, or vapour.

absol. To emit vapour.

To emit, give off, exhale steam or vapour.

intransitive. To give off vapour.

intransitive. To give off steam or vapour, to steam; (also) to be foggy, misty, or drizzly.

To give off or send up vapour, dust, spray, etc.; esp. to steam.

intransitive. To give off adsorbed or dissolved gas or vapour. Also: to be released as gas or vapour.

transitive. To give off or release (gas or vapour); to outgas. Also intransitive: (of a gas or vapour) to be given off or released. Cf. off-gassing…