noun
plural smears
[count] a dirty mark, spot, streak, etc., made by touching or rubbing something
medical :a very small sample of something (such as skin or blood) that someone examines with a microscope
an untrue story about a person that is meant to hurt that person's reputation
verb
smears; smeared; smearing
[+ obj] :to make (something) dirty by rubbing it with something else
[+ obj] :to spread (something) over a surface
[no obj] :to spread or drip in an untidy way
[+ obj] :to cause (something) to spread or drip in an untidy way
[+ obj] :to make untrue statements about someone in order to hurt that person's reputation