warden

n. jailer, official in charge of a prison; guardian, keeper; guard, protector; custodian, curator

The English word warden has developed a range of meanings, and may refer to any of the terms listed below.
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Noun
1. the chief official in charge of a prison
(synonym) warder
(hypernym) lawman, law officer, peace officer
(hyponym) wardress

(n.)
An officer who keeps or guards; a keeper; as, the warden of a prison.
  

(n.)
A large, hard pear, chiefly used for baking and roasting.
  

(n.)
A keeper; a guardian; a watchman.
  

(n.)
A head official; as, the warden of a college; specifically (Eccl.), a churchwarden.
  

      warned