grime (
http://definr.com/grime)
n : the state of being covered with unclean things [syn:
dirt,
filth,
soil,
stain,
grease,
grunge]
v : make soiled, filthy, or dirty; "don't soil your clothes when
you play outside!" [syn:
dirty,
soil,
begrime,
colly,
bemire] [ant:
clean]