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trampoline n.
An incredibly hairy technique, found in some HLL and program-overlay implementations (e.g., on the Macintosh), that involves on-the-fly generation of small executable (and, likely as not, self-modifying) code objects to do indirection between code sections. Under BSD and possibly in other Unixes, trampoline code is used to transfer control from the kernel back to user mode when a signal (which has had a handler installed) is sent to a process. These pieces of live data are called `trampolines'. Trampolines are notoriously difficult to understand in action; in fact, it is said by those who use this term that the trampoline that doesn't bend your brain is not the true trampoline. See also snap.
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