fat finger

Short definition from Wiktionary

Noun

1. 1
   A supposed cause of typographical errors, especially keyboard errors, caused from erroneous key presses or typing errors on touchscreen devices.
2. 2
   Alternative form of fat finger.

Verb

1. 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”).
2. 2
   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.