Kudos, Anita, that is correct. And this book was my source, too.
L. Burr told Stevens:"I recollect in particular, he was studying German. He looked up and said:'Here is a curious thing: the Germans have no word for "timble", they call it a "finger hat" (Fingerhut). And they have no word for "glove", they call it a "hand shoe" (Handschuh).' And then came one of Mr. Lincoln's inimitable laughs."