fat finger

Meanings

1. A supposed cause of typographical errors, especially keyboard errors, caused from erroneous key presses or typing errors on touchscreen devices.

1. Alternative form of fat-finger (“to type (something) erroneously on a keyboard, keypad, or touchscreen by accidentally pressing with a finger one or more keys other than the intended one”).

Etymology

From the idea that a finger that is too fat or large is likely to accidentally press one or more keys other than the intended one.