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1. To detach, separate, or sever from some larger thing or piece. Groups of students split off to work on the project. A large chunk of rock split off from the side of the mountain and rolled down into the ravine.
2. To detach, separate, or sever something (from some larger thing or piece). A noun or pronoun can be used between "split" and "off." Split the tough, fibrous ends off of the asparagus stalks before you pop them in the oven. She split off a piece of chocolate for me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
split something off (of) somethingand split something off
to sever connection with something; to separate from something. (Of is usually retained before pronouns.) Dave split a piece of wood off the log to use for kindling. He split off a stick of wood.
split off (from something)
to separate away from something; to sever connection with and separate from something. A large iceberg split off from the glacier and made an enormous splash. A giant chunk of ice split off and floated away.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. To separate something; detach something: The babysitter split off a piece of fruit and shared it with the child. Before putting the flowers in water, I split the stem ends off.
2. To become separated from something: The political party split off from a broader coalition. As the temperature rose, a large section of the iceberg split off.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.