a piece of cloth or other material used to mend or strengthen a torn or weak point

the jacket was of well-worn tweed with leather patches on the elbows

a part of something marked out from the rest by a particular characteristic

his hair was combed forward to hide a growing bald patch

the bird has a bright red patch under its wing

a small piece of ground, especially one used for gardening

they spent Sundays digging their vegetable patch

a particular period of time

he may have been going through a bad patch

a temporary electrical or telephone connection.

a small piece of code inserted into a program to improve its functioning or to correct a fault

a program patch that fixes a bug

mend or strengthen (fabric or clothing) with a patch

her jeans were neatly patched

treat someone's injuries or repair the damage to something in an improvised way

they did their best to patch up the gaping wounds

connect by a temporary electrical, radio, or telephonic connection

patch me through to number nine

improve or correct (a routine or program) by inserting a patch

had he patched our system to recognize a magic password?