One who beheads or executes by cutting off the head.

सिरवाले को मारने वाला

English Usage: The decapitator was feared throughout the kingdom for his ruthless executions.

Hindi Usage: राज्य में सिरवाले को मारने वाले से सभी डरते थे क्योंकि उसकी दया नहीं थी।