blade 
/ˈbleɪd/ noun
plural blades /ˈbleɪd/ noun [count] 1 : the flat sharp part of a weapon or tool that is used for cutting
▪ a knife blade ▪ the blade of an ax — see picture at carpentry; see also razor blade, switchblade 2 : one of the flat spinning parts that are used on some machines to push air or water
▪ a propeller blade 3 : the wide flat part of an oar or paddle 4 : the sharp metal piece on the bottom of an ice skate — see picture at skate 5 : a single piece of grass or a similar plant
▪ a blade of grass 6 literary a : sword 1
▪ an opponent worthy of my blade
b : swordsman
▪ the best blade in the land
▪ a knife blade ▪ the blade of an ax — see picture at carpentry; see also razor blade, switchblade
▪ a propeller blade
▪ a blade of grass
▪ an opponent worthy of my blade
b : swordsman
▪ the best blade in the land
— see also shoulder blade
