At low speed (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
slowly
'at low speed' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for slowly that I've seen before include "Lento, in music" , "Gradually" , "At less than normal speed" , "Little by little" , "Going at a low speed" .)