The,hairs, spines or feathers of an animal, which are raised when the creature in question is distressed.
"Suddenly there was a crash downstairs,I thought it was a freaking burglar!it turned out it was the darn cat,I had my hackles up over nothing!"
by Scarlo September 04, 2008
by The Office IT Department May 22, 2008
by ChrisO'Neat May 12, 2010
by McBobberson June 01, 2009
"Oh Dear, that chap seems to have been badly hackled there, look here Ref send that unsporting ruffian off."
by palacejester December 29, 2004