tach up

• IPA^(key): /ˌtæk ˈʌp/

tach up (third-person singular simple present tachs up, present participle taching up, simple past and past participle tached up)

1. To rev (up) a car's engine; to accelerate.
   • 1990, Thomas Pynchon, Vineland, Vintage, published 2000, page 55:

     [...]and quickly, in an arc unexpectedly graceful, they had all turned outward, tached up, engaged, and like a time machine departing for the future, forever too soon for Zoyd, boomed away up the thin, cloudpressed lane.

   • 2009, Thomas Pynchon, Inherent Vice, Vintage, published 2010, page 245:

     Tito tached up and dropped into low, leaving a fragrant set of tracks a block long and a screech that could be heard halfway to Boulder Dam.

• Chaput, chat up