line up on
line up on
1. To form or get into a line along some orienting shape, mark, perimeter, etc. We all lined up on the edge of the pool, waiting for the instructor's signal to dive in. Please line up on the dotted line I've marked for you on the stage.
2. To cause or direct someone or something to form or get into a line along some orienting shape, mark, perimeter, etc. In this usage, a noun or pronoun can be used before or after "up." The coach lined us up on the sidelines and then made us run sprints for the rest of practice. We'll need to line up these lights on the border of the footpath so people don't accidentally walk on the lawn during the night.
3. To cause or direct someone or something to form or get into a row atop something. In this usage, a noun or pronoun can be used before or after "up." The drill instructor lined the trainees up on the wall and told them to jump at the same time. Please line up the new inventory on the shelves before we open.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
line someone or something up on something
to place people or things into a line oriented on one or more things. Line them all up on the edge of the grass. Line up the children on the white line.
line up on something
to form a line oriented on something. Line up on the white line painted on the pavement. Please line up on the marks on the floor.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.