The power of a small work group (5)
I believe the answer is:
steam
'the power' is the definition.
(I've seen this before)
'a small work group' is the wordplay.
'a small work' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'group' becomes 'team'.
's'+'team'='STEAM'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for steam that I've seen before include "Speed" , "Source of power" , "Kind of power" , "Kettle emission" , "A lot of hot air" .)