decoration / ornament / to decorate / to adorn / to hide / to conceal (a fault) / excuse (to hide a fault) / to play a role (in opera) / to impersonate
饰
=
布
+
饣
:
Sherlock Holmes (sh) has been hiding in the space station's bathroom (Ø4) to find out who has been smearing ornaments (饰) to the walls. One night he finally observes an intruder masked with an eye mask (布) smearing greasy lines on the wall using a Chinese cruller (饣).