izarums

From izar(t) (“to plow out”) +‎ -ums (with izart from iz- +‎ art (“to plow”)).

izarums m (1st declension)

1. furrow, depression on the surface layer of the earth created while plowing (usually in the middle of a field)

   lauka ražību mazina izarumi un saarumi; saarumos augu rīcībā ir lielāks daudzums auglīgas augsnes, izarumos - tikai plāna tās kārtiņa ― depressions (furrows) and ridges reduce the productivity of a field; in the ridges, during the growth of the plants, there is a larger amount of fertile soil, in the depressions - only a thin layer of it

2. the (finished) action of removing, digging, grubbing out (something) by plowing; the result of this action