In a race, can it get you nowhere? (3)

I believe the answer is:
lap
'it get you nowhere?' is the definition.
The definition suggests a singular noun which matches the answer.
'in a race' is the wordplay.
I cannot really understand how this works, but
'a' is found in the answer.
The remaining letters 'lp' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'can' is the link.
Can you help me to learn more?
(Other definitions for lap that I've seen before include "Single circuit of track" , "Circuit of racetrack" , "place for small computer?" , "Once around the track" , "One circuit of track" .)
