Warning about extremely angular small strokes? (7)
I believe the answer is:
oarsmen
'strokes?' is the definition.
(I've seen this before)
'warning about extremely angular small' is the wordplay.
'warning' becomes 'omen' (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'small' becomes 's' (abbreviation - e.g. clothes size).
'angular' with its middle taken out is 'ar'.
'ar'+'s'='ars'
'omen' placed around 'ars' is 'OARSMEN'.
(Other definitions for oarsmen that I've seen before include "Scullers" , "They propel a boat manually" , "A sermon about rowers" , "Male rowers" , "Rowing types" .)