<programming> The area of memory attached to a Unix process by the brk and sbrk system calls and used by malloc as dynamic storage. So named from a "malloc: corrupt arena" message emitted when some early versions detected an impossible value in the free block list.
See overrun screw, aliasing bug, memory leak, memory smash, smash the stack.
Try this search on Wikipedia, OneLook, Google
Nearby terms: ARCnet « ARCS « Arctic « arena » ARES » AREV » AREXX