1. [17C+] (also beeks) a judge, a magistrate; often in phr. up before the beak, in the magistrate’s court [poss. f. harman n.].
2. [19C] (also beaky) a sheriff’s officer, a policeman.
3. [mid-19C] (UK prison/Und., also beakman) a prison warder.
4. [1910s+] a schoolmaster.
[mid-19C] the magistracy.
[late 19C] a senior judge.
[late 18C] (UK Und.) an officer of the law, lit. ‘a runner for the magistrate’.
[early–mid-19C] a policeman; a police-office clerk.