Lewis & Short

māchĭnātor, ōris, m. [machinor], a maker of machines, a machinist, an engineer, architect (class.).

  1. I. Lit., of Archimedes: inventor ac machinator bellicorum tormentorum, Liv. 24, 34: machinatores, qui pegmata per se surgentia excogitant, Sen. Ep. 88, 19: magistri et machinatores quibus ingenium et audacia erat, Tac. A. 15, 42: deus rerum omnium machinator fecit hominem, maker, creator, Lact. 2, 11.
  2. II. Trop., a contriver, inventor: harum omnium rerum machinatores, Cic. Agr. 1, 5, 16: omnium architectus et machinator, id. Rosc. Am. 45, 132: horum omnium scelerum improbissimus machinator, id. Cat. 3, 3, 6: doli, Tac. A. 1, 10: auctor et machinator accusationis, App. Mag. p. 274, 22.