to guard / to defend / to keep watch / to abide by the law / to observe (rules or ritual) / nearby / adjoining
守
=
宀
+
寸
:
Sherlock Holmes just graduated from police school and stands guard in the outhouse. Still wearing his graduation cap and carrying a huge shield, he's protecting the outhouse's art. The visitors are a bit afraid of him, so he thumbs up to show them that there's no danger from him.