Phrase guide

NOP sled

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 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.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, programming, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: NOP slide

Antonyms: none provided

History

Etymology

See nop (“no operation”).