Word Study
tractor |
tractor airplane |
tractor propeller |
tractor screw |
tractor trailer |
tractor-trailer
| tractoration
| tractory
| tractrix
| tracy
| trad
tractor-trailer
CIDE DICTIONARY
tractor-trailer, n.
a combination of a tractor{4} hooked up to a trailer, forming a common type of truck{7} used for carrying freight on highways. [PJC]
For further exploring for "tractor-trailer" in Webster Dictionary Online

