get up against
get up against (someone or something)
To physically move or lean against someone or something. The police officer shouted for all of us to get up against the wall.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
get up against someone or something
to press close against someone or something. I got up against the wall, out of the way. The child got up against his father to stay warm.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.