What does signaller mean?
A signaller is a person who gives, transmits, or responds to signals. Its most familiar use is in railway operations, where a signaller is responsible for operating signals and helping ensure that trains move safely along the track. The term can also describe people who communicate through visual, audible, or other formal signals, such as flags, lights, gestures, or radio procedures. In British English, "signaller" is the standard spelling; American English normally uses "signaler." Outside specialist railway contexts, the word may sound somewhat formal or occupational rather than everyday. Despite that register, signallers are associated with a striking form of communication in which a small, precisely made signal can convey an instruction affecting the movement of an entire train.
nounA person who gives or transmits a signal, especially someone whose occupation is to control railway traffic by operating signals. The term can also refer generally to someone who communicates by signals.
- A person whose job is to operate railway signals and control the movement of trains.
- A person who communicates or gives a signal by any recognized method.
"The signaller checked the track before waving the train forward."
"The signaller received the report that the line ahead was clear."
"A trained signaller communicated the arrival using a flag and hand movements."
The standard plural adds -s to the noun.
"Several signallers were on duty throughout the night."
A railway signaller can guide an entire train with a carefully timed signal and no spoken words.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does signaller come from?
The word was formed in English by adding the agent suffix -er to "signal," with the doubled consonant reflecting the standard British spelling convention before a suffix beginning with -er. "Signal" comes through Old French from Latin signalis, an adjective meaning "of or resembling a sign," ultimately derived from Latin signum, meaning "a sign, mark, or symbol." Related English words include "sign," "signature," and "signify," all of which continue the same Latin root.
How signaller is actually used
The word is neutral and especially common in British English, where it is strongly associated with railway operations. In American English, "signaler" is generally preferred, though "signaller" is understood.
Easily confused with signaller
"Signaler" is the usual American spelling of the same word; it does not represent a different meaning.