pack up

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verb (adverb)
to put (things) away in a proper or suitable place
informal to give up (an attempt) or stop doing (something)if you don't do your work better, you might as well pack up
(intr) (of an engine, machine, etc) to fail to operate; break down
engineering to use packing to adjust the height of a component or machine before it is secured in its correct position or alignment
Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

How to use pack up in a sentence