post up
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post up
In basketball, to assume an offensive position between the foul line and the basket (known as the low post) with one's back to the basket and a defending player. Post up, Johnson, post up—you're twice the size of the man covering you!
post something up
to record a transaction in an account. I'll post this charge up right away, and then you can check out. Please post up the charges a little later.