Country lass with uniform gets measure of speed to lollop along (7)
I believe the answer is:
galumph
'speed to lollop along' is the definition.
I can't tell whether this definition defines the answer.
'country lass with uniform gets measure' is the wordplay.
'country lass' becomes 'gal' (I've seen this in another clue).
'with' is a charade indicator (letters next to each other).
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'gets measure' becomes 'mph' (I can't justify this - if you can you should give a lot more credence to this answer).
'gal'+'u'+'mph'='GALUMPH'
'of' is the link.
Can you help me to learn more?
(Other definitions for galumph that I've seen before include "Bound so excitedly" , "Stride exultantly" , "Leap about clumsily" , "proceed awkwardly" , "move inelegantly" .)