fleyta rjómann

Etymology
From +  the accusative definite article form of. Meaning "to skim the cream off".

Verb

 * 1) to profit, to make profit, to take the best off

Usage notes

 * When used transitively, the preposition is used much like the preposition  is in English:
 * Búðir reyna að fleyta rjómann af jólunum.
 * Stores try to profit from Christmas.