Answer: protector

AnswerCrossword Clue
PROTECTORWatchDOG
PROTECTORBodyguard.
PROTECTORExpert + sleuth + peak
PROTECTORKnight, to a damsel
PROTECTOROne of New York's finest e.g.
protectorperson in charge of the kingdom during the sovereign's minority, incapacity, etc.
protectortitle of the head of the government during the period of the Protectorate
protectorperson or thing that defends against injury or attack; guardian
protectorone who protects also PROTECTER