Phrase guide

full metal jacket

noun · 3 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

A bullet having a complete covering of copper over the lead core.

Definition source: English Wiktionary via Wiktextract

Topics: engineering, firearms, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: FMJ

Antonyms: none provided

2

noun

Meaning 2

The metal jacket itself, which covers the lead core.

Definition source: English Wiktionary via Wiktextract

Topics: engineering, firearms, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a lead bullet that is covered with a jacket of a harder metal (usually copper)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: bullet, slug

History

Etymology

No etymology was provided for this word.

Across languages

Translations

4 source translations are retained for this English entry.

  • German: Vollmantelgeschoss — bullet with complete covering of copper
  • Polish: pocisk pełnopłaszczowy — bullet with complete covering of copper
  • German: Vollmetallmantel — the metal jacket itself
  • Polish: pełny płaszcz — the metal jacket itself