pincher

“And they would certainly take offence, were their son to be accused of theft.” “It would stir them up like an egg whisk. I mean, however well they know that Wilbert is a pincher, they don't want to have it rubbed in.” … “And if ever a man needed to be constantly under an eye, it's the above kleptomaniac.” “The what?” “Haven't you been told? Wilbert's a pincher. … He pinches things. Everything that isn't nailed down is grist to his mill.”