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2.
Protection of fore arms.
Used by knights and soldiers in the Middle Ages.
Often mounted by spikes or blade(s).
His greaves deflected the fiends sword.
He killed his foe with the spikes on his left greave.
by Caddy102 April 08, 2013
 
1.
The process of making crappy Urban Dictionary definitions and/or killing jokes to the point of no return.
This definition in itself is a greaves.
by Nex Solo February 21, 2011