Burn end of finger in scalding vapour (6)
I believe the answer is:
stream
'burn end of finger in scalding vapour' is the definition.
'stream' can be an answer for 'burn' (burn is a Scottish dialect word for a stream). I'm not sure about the 'end of finger in scalding vapour' bit.
'burn end of finger in scalding vapour' is the wordplay.
'burn' becomes 'smart' (I've seen this in another clue).
'end of' says to hollow out the word (remove centre letters) (I've seen 'ends' mean this).
'finger in scalding vapour' becomes 'ream' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'smart' with its middle taken out is 'st'.
'st'+'ream'='STREAM'
Can you help me to learn more?
(Other definitions for stream that I've seen before include "course" , "One small river" , "Brook or small river" , "group of pupils split by ability" , "Moving water" .)