sacrifice:Primarily, the slaughter of an animal (often including the subsequent consumption of it by fire) as an offering to God or a deity. Hence, in wider sense, the surrender to God or a deity, for the purpose of propitiation or homage, of some object of possession. Also applied fig. to the offering of prayer, thanksgiving, penitence, submission, or the like. ——Oxford English Dictionary

sacrifice:the act of offering something to a god, especially in the past, by killing an animal or person in a religious ceremony.——Longman Dictionary of Contemporary English  @en