captor

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++cap·tor /ˈkæptə $ -ər/ noun [countable]  KEEP somebody IN A PLACEsomeone who is keeping another person prisoner 捉拿者，捕捉者，劫持者 → captive He managed to escape from his captors. 他设法从劫持者手中逃脱了。

Examples from the Corpus

captor• Marian already felt her captors were not strangers to her.• An extension of this may occur when the victim actually, becomes a supporter or advocate of her captor.• Mann was finally freed by his captors.• Nothing specific, but he knew his captors could beat the rest of it out of him.• Park then placed him under house arrest, while his captors went free, and later imprisoned him for sedition.• One of their captors filmed the shootings with a video camera.• Hostages are said to develop similarly complex attachments to their captors.Origin captor (1500-1600) Late Latin Latin captus; → CAPTIVE1

cap·tor nounChineseSyllable  

prisoner Corpus is who another someone person keeping

captor
cap‧tor /ˈkæptə $ -ər/ noun [countable]someone who is keeping another person prisoner ⇨ captive:
    He managed to escape from his captors.

cap·torBrE /ˈkæptə(r)/ 🔊NAmE /ˈkæptər/ 🔊 noun (formal) a person who captures a person or an animal and keeps them as a prisoner 捕获…者；捕捉者；劫持者