Definition of prey verb from the Oxford Advanced American Dictionary

 

prey

 verb
verb
NAmE//preɪ//
 
Verb Forms present simple I / you / we / they prey
 
he / she / it preys
 
past simple preyed
 
-ing form preying
 
 
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Idioms
prey on somebody's mind
 
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(of a thought, problem, etc.) to make someone think and worry about it all the time The thought that he could have helped more preyed on his mind.
Phrasal Verbsprey on/upon somebody/something
See the Oxford Advanced Learner's Dictionary entry: prey