without authority / to usurp / to arrogate to oneself / to monopolize / expert in / to be good at
擅
=
亶
+
扌
:
Sherlock Holmes (sh) finds a beautiful toy claw (扌) in the anthill's bathroom (an4), but he knows that he is not supposed to take it. Nevertheless, he bows very deeply (亶) and then usurps (擅) the toy claw anyway.