bank up

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bank up

1. To save a particular resource or thing so as to have it in reserve. A noun or pronoun can be used between "bank" and "up." Are we allowed to bank up sick time at this company?
2. To form something into a mound or pile supported by something else. A noun or pronoun can be used between "bank" and "up." Hey, bank those leaves up against the shed.
3. To form something into a mound or pile as a means of protection. A noun or pronoun can be used between "bank" and "up." We banked up some old bricks to hide from the invaders.
See also: bank, up

bank something up

 (against something)
1. to heap or mound up something so that it presses against something. Walter banked the coals up against the side of the furnace. He banked up the coals against the side. Tim banked the coals up.
2. to heap or mound up something to guard against something. They had to build barriers to hide behind. They banked dirt and rubble up against the oncoming attackers. Who banked up this dirt against the flood? The river was rising, so we banked some dirt up.
See also: bank, up