1) Anti-lightning device 2) Arrester hook 3) Checker 4) Citizen, at times 5) Constraint 6) Cop making a collar 7) Cop, on occasion 8) Lightning device 9) One who takes people in 10) Perp apprehender 11) Police officer, at times 12) Restraint Found on https://www.crosswordclues.com/clue/arrester
Ar·rest'er noun 1. One who arrests. 2. (Scots Law) The person at whose suit an arrestment is made. [ Also written arrestor .] Found on http://www.encyclo.co.uk/webster/A/123