# NOP sled

> English word · Noun

## Definitions
1. A series of identical values in memory that instruct the CPU to take no action and proceed to the next instruction, used in shellcode etc. to increase the chances of any random instruction access executing the sequence that follows.

## Etymology
See nop (“no operation”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nop-sled