D defs.my
Entry 2 senses Webster, 1913

Conservator

/kən-sẽrv'-ət-ẽr/ · Con·ser·va·tor · IPA /kənˈsɝ.və.tɚ/
01 n. One who preserves from injury or violation; a protector; a preserver.
  1. 1.
    One who preserves from injury or violation; a protector; a preserver.
    “The great Creator and Conservator of the world.” — Derham.
  2. 2.
    An officer who has charge of preserving the public peace, as a justice or sheriff.(Law)
    “The lords of the secret council were likewise made conservators of the peace of the two kingdoms.” Clarendon.
    “The conservator of the estate of an idiot.” — Bouvier.
Phrases & compounds
Conservators of the River Thames — a board of commissioners instituted by Parliament to have the conservancy of the Thames.