pickpocket
掏 centers on stealthily taking something from a person, specifically pickpocketing.
掏 combines 扌 (hand) with 匋, which likely contributes the sound and relates to scooping or extracting, fitting the idea of a hand removing something from a pocket.
The hand radical 扌 beside 匋 suggests a hand reaching into a container-like shape to pull something out, like a pickpocket slipping a hand into a pocket.
For トウ, imagine a pickpocket reaching into a toe of a shoe to steal something: toe -> トウ, and the hand sneaks in.
to pickpocket; to steal