All round, they offer some doughty resistance (5)
I believe the answer is:
tyres
'all round they' is the definition.
The definition suggests a plural noun which matches the answer.
'offer some doughty resistance' is the wordplay.
'offer some' indicates the answer is hidden within the clue (I've seen 'offering some' mean this (I've seen this in other clues)).
'TYRES' is hidden in the letters of 'doughty resistance'.
Can you help me to learn more?
(Other definitions for tyres that I've seen before include "Wheel coverings" , "Rubber wheel covers" , "rubber rings" , "Wheel hoops" .)