Meet first of campers on side of road (8)
I believe the answer is:
converge
'meet' is the definition.
(converging is a kind of meeting)
'first of campers on side of road' is the wordplay.
'first of' indicates taking the first letters.
'side of road' becomes 'verge' (I've seen this before).
The first letter of 'campers' is 'c'.
'c'+'on'+'verge'='CONVERGE'
(Other definitions for converge that I've seen before include "Approach a single point" , "Come together" , "Move towards meeting" , "tend to get together" , "Come towards the same point like Congreve" .)