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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈɹeɪl.ɡʌn/
/ˈɹeɪ.jəl.ɡʌn/
[ˈɹeɪɫ.ɡʌn]
[ˈɹeɪ.jəɫ.ɡʌn]
1
noun
Meaning 1
An electromagnetic gun that uses a large electrical current to propel a projectile down a track of two parallel conductive rails.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A railway gun.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A benchrest rifle.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
From rail + gun. * (railway gun): From being a gun mounted on a rail car, and being railroad-mobile. * (EM gun): From being a projectile ejecting device with a pair of electric conducting rails that a launch sled runs along, which shoots the projectile.
Across languages
Translations
17 source translations are retained for this English entry.
Chinese Mandarin:
磁道炮
(cídàopào)
— electromagnetic gun
Chinese Mandarin:
電磁炮 /电磁炮
(diàncípào)
— electromagnetic gun