To project a liquid in a dispersive manner toward something.
The firemen sprayed the house.
To project in a dispersive manner.
Spray some ointment on that scratch.
To project many small items dispersively.
To urinate in order to mark territory.
To allocate blocks of memory from (a heap, etc.), and fill them with the same byte sequence, hoping to establish that sequence in a certain predetermined location as part of an exploit.
to spray the heap of a target process
Chapped with cold