Also found in: Dictionary.
To pulverize or break something into a smaller state or finer substance. A noun or pronoun can be used between "crush" and "up." If I don't crush up the pill and mix it into my daughter's apple sauce, she won't take it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
crush something up (into something)
to press or grind something with great force until it is reduced to something smaller. The chef crushed the almonds up into a powder and sprinkled them on the dessert. The machine crushed up all the glass into tiny bits.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.