Definition (处决)
To execute someone by fastening them to a post and setting them on fire.
处以火刑
He refused to renounce his faith and was subsequently burned at the stake.
他拒绝放弃信仰，随后被处以火刑。
She was later tried for heresy and sentenced to be burned at the stake.
她后来因异端邪说受审，被判处火刑。
During that period, people were burned at the stake for accusations of practicing witchcraft.
在那个时期，人们因被指控施行巫术而被处以火刑。