n. The act of pressing an input key; a keypress on a computer keyboard or a typewriter, or a similar input device.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the stroke of a key; one depression of a key on a keyboard
Word Usage
"Programs like KeyBag are commonly known as keystroke loggers, and this Universal application works on Mac OS X 10.4 (Tiger) and Mac OS X 10.5 (Leopard)."