To temporarily ignore or leave out someone, usually due to a minor fall out. Can be done face to face, by text or msn.

In Computer Software industry: the process of taking old bugs out and putting new ones in.

(n.) an electronic file alteration intended to correct or update a faulty or vulnerable file, akin to a cloth 'patch'.

Female frontal pubic hair area trimmed into the shape of a rectangle.

to "make out with"; Australian teen slang term.

To be spanked on the buttocks with a wet and soapy rubber glove.

A patch is usually intended to modify an executable file to improve it.
A patch is obviously a digitalized file which has been programmed to take out programming faultys and errors and replace them with a correct line of code.
A patch can be written by any programmer with a open source executable file (that they wish to modify). Patches can also be written by programmers to convert trial softwares to full version softwares, this includes games. The word for adding patches to executable files to modify it illegally is called, when spoken by someone "patched". Look below