1A person who tunes musical instruments, especially pianos.

1. 1.1 An electronic device for tuning a guitar or other instrument.
   （吉他等的）电子调节器
   Example sentencesExamples

   • The use of metronomes, electronic tuners or other mechanical devices will not be allowed during the contestant's performance.
   • Someone is going to make a killing soon with Prada guitar picks and extra large electronic tuners for the bi-focalled axe master.
   • A digital tuner is useful for teachers of certain instruments, and a tape recorder allows students to tape and listen to their own playing.
   • A built-in tuner allows for the precise tuning of instruments via the built-in microphone, or through an external microphone.
   • The locked Samsonite briefcase contained five guitar effects pedals and a battery-powered tuner, all linked by electrical cable.
2. 1.2 An electronic device for varying the frequency to which a radio or television is tuned.
   （收音机、电视的）调谐器
   Example sentencesExamples

   • You need one of the digital radio tuners that plug into a USB port.
   • Yet another audio tool at your disposal is the FM Radio tuner.
   • If you use a TV tuner for video caption recording it's a great deal because your sound will be through your sound card, and the video is good quality.
   • There are a number of products that employ unused FM radio frequencies to send music from your PC to any device with a radio tuner.
   • In the car, Chase fumbled with the radio tuner in an attempt to take his mind off the conversation he and Cheyne had never had about Danny.
   • Remixing sometimes sounds like twiddling the radio tuner rapidly through different stations.
   • As it happens, that song is one guaranteed to make me lunge for the tuner on the radio.
   • The PC serves as the DVD player, TV / FM tuner, video recorder and storage medium for music, photos and video.
   • The new player acts as a Web radio tuner and a jukebox that allows users to create playlists.
   • The TV supports multiple tuners, and I was lucky enough to test drive a two-tuner setup.
   • Untested as of time of press, the sleek-looking box has built-in speakers and a television tuner.
   • Many of these cards also function as television tuners, so you can turn your computer into a complete entertainment system.
   • We reach for the tuner on the radio.
   • A motor in the TV set operated the tuner through the remote control.
   • If they'd included a radio tuner, I would have bought one already.
   • Most amps have a radio tuner built in, giving them that added functionality.
   • Jeff likes to listen to the radio but is not allowed to have a radio in the office, so he buys a tv tuner card that has radio support.
   • It features two tuners for independent satellite TV viewing on two separate televisions.
   • This little machine holds 1GB of music, features an FM radio tuner and also a voice recorder!
   • A digital radio hi-fi tuner will come with an indoor aerial, either a ribbon dipole or a monopole (half dipole).
3. 1.3 A separate unit for detecting and preamplifying a programme signal and supplying it to an audio amplifier.
   （扩音器的）调谐部件
4. 1.4 A person who tunes car engines or other machines.
   （汽车引擎或其他机器的）调试者
   Example sentencesExamples

   • Import restrictions and greater familiarity with Japanese engines has prompted American tuners to use the Honda VTEC powerplant though.
   • For the engine tuners, Michigan is a delicate balance between fuel economy and horsepower.
   • I talked to most of the engine tuners and I particularly liked the sound of Bill Richards.
   • Engine tuners give weather a lot of consideration when they adjust their set-ups.
   • ‘Chad pays attention to every detail,’ says Danny Emerick, the team's engine tuner.
   • Jason is the best engine tuner and dyno operator in the country, and he's still going to drive our second car.
   • Her dad, Dave James, was an engine tuner and she'd seen enough oily chains and carburettors at her home in Stockport to last her a lifetime.
   • To my utter amazement, after discussing various engine tuners, Clive offered to ask John Oliver in person if he would do the refurbishment.