Speed must empower nurses (5)
I believe the answer is:
tempo
'speed' is the definition.
(I've seen this before)
'must empower nurses' is the wordplay.
'nurses' says the answer is hidden in the clue (nurse can mean holding closely).
'TEMPO' is hidden within 'must empower'.
(Other definitions for tempo that I've seen before include "Rhythm of piece of music" , "Pace of a piece of music" , "Time (music)" , "Speed or beat, musically" , "Musical time" .)