graffiti
noun
ɡræˈfiːti
noun
1
rude,
humorous,
or
political
writing
and
pictures
on
the
walls
of
buildings,
trains
etc
〔墙上或火车上等的〕涂鸦，乱涂乱画
The
walls
are
daubed
with
graffiti.
墙上涂满了乱七八糟的文字和图画。