Definition of even-up:
(adj) :
Equal in proportion, quantity, size, etc.
(adj) :
Flat and level.
(adj) :
Without great variation.
(adj) :
(mathematics, not comparable) Of an integer, divisible by two.
(adj) :
(informal) Of a number, convenient for rounding other numbers to; for example, ending in a zero.
(adj) :
On equal monetary terms; neither owing nor being owed.