殺す， ころす
1. to kill, to slay, to murder, to slaughter
2. to suppress, to block, to hamper, to destroy (e.g. talent), to eliminate (e.g. an odour), to spoil (e.g. a flavour), to kill (e.g. one's speed)
3. to suppress (a voice, feelings, etc.), to hold back, to...
杀，谋杀