Smear

verb (used with object)
1.
to spread or daub (an oily, greasy, viscous, or wet substance) on or over something:
to smear butter on bread.
2.
to spread or daub an oily, greasy, viscous, or wet substance on:
to smear bread with butter.
3.
to stain, spot, or make dirty with something oily, greasy, viscous, or wet.
4.
to sully, vilify, or soil (a reputation, good name, etc.).
5.
to smudge or blur, as by rubbing:
The signature was smeared.
6.
Slang. to defeat decisively; overwhelm:
They smeared the home team.
noun
7.
an oily, greasy, viscous, or wet substance, especially a dab of such a substance.
8.
a stain, spot, or mark made by such a substance.
9.
a smudge.
10.
something smeared or to be smeared on a thing, as a glaze for pottery.
11.
a small quantity of something spread thinly on a slide for microscopic examination.
12.
vilification:
a smear by a cheap gossip columnist.
verb (mainly transitive)
1.
to bedaub or cover with oil, grease, etc
2.
to rub over or apply thickly
3.
to rub so as to produce a smudge
4.
to slander
5.
(US, slang) to defeat completely
6.
(intransitive) to be or become smeared or dirtied
noun
7.
a dirty mark or smudge
8.

a slanderous attack
(as modifier): smear tactics

9.
a preparation of blood, secretions, etc, smeared onto a glass slide for examination under a microscope

smear (smēr)
n.
A sample, as of blood or bacterial cells, spread thinly on a slide and usually stained for microscopic examination or applied to the surface of a culture medium.
smashing
smash-mouth