tattlers

Noun

tattler (plural tattlers)

1. One who tattles (notifies authorities of illicit behavior) or is inclined to do so; a tattletale.
   • My sister is a big tattler; she always tells Mommy when I hit her!

   Synonyms:

   informant, narc, stool pigeon, tattletale, abaddon, accuser, beefer, bewrayer, bigmouth, blabber

2. Either of two similar bird species in the shorebird genus Heteroscelus (Tringa in some taxonomies).
3. A device fitted to a vehicle to measure mileage etc.
   • A few truck drivers griped drowsily about the tattlers in their cabs which graphed the mileage per hour per day.1960, Edward Hogland, The circle home

   Synonyms:

   tachograph