Old-fashioned fellows, swaggering and incisive (6)
I believe the answer is:
blades
'old-fashioned fellows' is the definition.
Although both the answer and definition are plural nouns, I can't understand how one could define the other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for blades that I've seen before include "Metal runners on skates" , "Cutting parts of knives" , "They cut" , "Football club nickname" , "Leaves of grass or cutting tools" .)