n. One who bears witness; a witness.n. One who records; specifically, a person whose official duty is to register writings or transactions, as the keeper of the rolls of a city, or the like.n. A judge having local criminal jurisdiction in a city or borough.n. A musical instrument of the flageolet family, having a long tube with seven holes and a mouthpiece.n. A registering apparatus; specifically, in telegraphy, a receiving instrument in which a permanent record of the signals is made.