英和和英

語源

From track +‎ -er.

発音

• IPA: /ˈtɹækə(ɹ)/
• 韻: -ækə(ɹ)

名詞

tracker (plural trackers)

1. Agent noun of track; one who, or that which, tracks or pursues, as a man or dog that follows game.
   • 2025 June 21, Thomas Bordeaux, Natasha Bertrand and Zachary Cohen, “US moves B-2 bombers as Trump weighs Iran options”, in CNN‎:

     On Friday night, eight US Air Force KC-135 Stratotankers took off from Altus, Oklahoma, according to data from FlightRadar24. Over Kansas the tankers refueled two groups of planes, identified on air traffic control audio by their callsigns MYTEE11 FLT and MYTEE21 FLT. The callsign MYTEE has previously been associated with special activity flights by B-2 bombers, and multiple flight trackers on social media said the planes being refueled were B-2 bombers out of Whiteman Air Force Base in Missouri.

   1. (US politics) A person employed to follow and monitor a political rival.
      • 2022 December 17, Judith Newman, “John Fetterman’s TikTok Whisperer”, in The New York Times‎, →ISSN, archived from the original on 24 December 2022:

        While she and Mr. Fetterman were often in different places, she would turn up at events early so she could shoot and post photos of the crowds, the lines, the people. At most events there was a tracker: a guy from the Oz team who monitored the goings-on.

   2. (Australia) An Indigenous Australian employed by the law to track down fugitives and missing persons.
      • 1937, Ion L. Idriess, Over the Range, Sydney: Angus and Robertson, published 1947, page 6:

        The police picked him up, reared him, and he had been a tracker ever since, except for periodical walk-abouts.

2. In an organ, a light strip of wood connecting (in path) a key and a pallet, to communicate motion by pulling.
3. (computing) A type of computer software for composing music by aligning notes or samples on parallel timelines.
   • 2004, dilvie, “new.scene.org”, in alt.music.mods (Usenet):

     Trackers have broken out of the demoscene, are are now in use by thousands of professional musicians. It's not uncommon to hear about people using trackers on DJ forums, and electronic music production communities […]

   • 2008, Karen Collins, Game sound:

     Although there were a few game companies outside the Amiga scene that used a tracker format (Epic Mega-Games, for instance), the majority used the better-supported MIDI.

   • 2018, Dafni Tragaki, Made in Greece: Studies in Popular Music:

     At the time, tracking chiptunes (i.e. using trackers) was the fundamental method of chipmusic-making.

4. (computing) A musician who writes music in a tracker.
   • 1999, Adrian Dunn, “Re: Using a scanned picture in your demo”, in comp.sys.ibm.pc.demos (Usenet):

     You can always find musicians. There are more trackers than coders, pixelers, organizers, couriers, and designers combined.

5. (computing) A computer program that monitors something.
   1. (file sharing) Server software that coordinates peers in the BitTorrent protocol.
6. (finance) A tracker mortgage.
7. (in combination) An album with the specified number of tracks.
   • 1985, Maximum Rocknroll (issue 24)

     "Typical" is the best song on this nine-tracker, and ironically, the record itself is good, but typical.

派生語

アナグラム

• retrack