n. A constructor of machines and engines, or one versed in the principles of machines; in a general sense, one who invents or constructs mechanical devices of any kind.n. One who tends or works a machine.n. In the rating of the United States navy, an engine-room artificer or attendant.n. In United States politics, an adherent of the machine, or a supporter of its methods.n. In the history of art, one of those Italian painters of about the seventeenth century (a period of artistic decline) who worked mechanically or according to rigid rules.