1) Kill 2) Killing 3) Putting to death 
• (a.) Of or pertaining to sacrifice or sacrifices; consisting in sacrifice; performing sacrifice.
a material which is used or positioned in such a way that it will deliberately absorb damage, and will also be more easily replaced than the material or detail it is protecting. Examples would include lime render or limewash protecting the stonework below or, an additional lead flashing s...
Sac`ri·fi'cial adjective Of or pertaining to sacrifice or sacrifices; consisting in sacrifice; performing sacrifice. ' Sacrificial rites.' Jer. Taylor. 
[adj] - used in or connected with a sacrifice
adjective used in or connected with a sacrifice; `sacrificial lamb`