back (someone or something) up to (something)(redirected from back them up to)
back (someone or something) up to (something)
1. To abut something. Our house backs up to a beautiful park.
2. To move or maneuver someone or something backwards to something else. In this usage, a noun or pronoun can be used between "back" and "up." Can you help me? I'm having a hard time backing up to the door. Tom helped me back the truck up to the door.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
back someone or something up to someone or somethingand back someone or something up
to guide or move someone or something backwards to someone or something. She backed the car up to the end of the street. Using hand signals, Todd helped back Mary up to the gas pump. He backed up the motor home carefully.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.