https://www.merriam-webster.com/dictionary/prayerprayer noun(1) .... (非人)prayer noun(2) one that prays (人)有两种(大类)意思
https://www.ldoceonline.com/dictionary/prayer专为learners出的Longman通常不收纳较少用的字义--他们没收纳prayer(人)的字义结论就是两者都对,一个较常见,另一个较少。总之就是看看内文,不要只看"prayer"一个字就盲目的直翻