Tool for cutting plank supporting small part of raised concrete (5,4)
I believe the answer is:
laser beam
'raised concrete' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'tool for cutting plank supporting small part' is the wordplay.
I cannot really see how this works, but
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is located in the answer.
'part' could be 'la' (la is a kind of part) and 'la' is present in the answer.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for laser beam that I've seen before include "Intense ray of light" , "Shaft of light or electro-mechanic radiation" , "Shaft of light or electromagnetic radiation" , "penetrating light" , "Column of intensified light" .)