DCHP-1 Online
double-trip 
v. take part of a load, leave it, and return for the rest; transport a load in two trips.
- 1962 The old prospectors had already begun to mush their outfits by dog sleds, having to double-trip it, pulling a load up ten miles, leaving that load and returning to camp the same day.
- 1962 The old prospectors had already begun to mush their outfits by dog sleds, having to double-trip it, pulling a load up ten miles, leaving that load and returning to camp the same day.