Blade cut off pig’s head (3)
I believe the answer is:
oar
'blade' is the definition.
(blade is the word for oar in competitive rowing)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for oar that I've seen before include "that may be feathered?" , "Rower's implement" , "propels floating craft" , "One of an eight" , "Implement to propel a boat" .)