(MAKE DIRTY) [verb] [T] [formal or specialized] - to pollute (something) or make it dirtyThe oil slick fouled (= polluted) the Kuwaiti shoreline.Penalty for dogs fouling (= excreting the contents of their bowels onto) the footway - £50.
FOUL
Meaning of FOUL in English
Cambridge English vocab. Кембриджский английский словарь. 2012