Steam from lava pours off the sides (6)
I believe the answer is:
vapour
'steam' is the definition.
(I've seen this before)
'lava pours off the sides' is the wordplay.
'VAPOUR' is hidden in amongst the letters.
However, I am not sure how this is indicated.
'from' is the link.
Can you help me to learn more?
(Other definitions for vapour that I've seen before include "Substance diffused in the air" , "Air-like substance created by heating, like gas" , "Gaseous form of liquid substance" , "Gas-like mist" , "Substance in the form of a mist, fume or smoke" .)