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bolt·er 1

1. A horse given to bolting.
2. One who gives up membership in or withdraws support from a political party.

bolt·er 2

1. A machine used for sifting, especially for sifting flour.
2. One who operates a sifting machine.


1. an outsider in a contest or race
2. (Historical Terms) history an escaped convict; bushranger
Mentioned in ?
References in classic literature ?
Milty bolter told me a grate story in school yesterday.
This sparkling sally is to the effect that although he always knew she was the best-groomed woman in the stud, he had no idea she was a bolter.
There are currently mre than 200 of these roof bolters in South Africa, with the bulk of the machines being twin-boom units.
The Table of Contents shows the seventeen bushrangers divided into three categories: The Bolters (8), Local Outlaws (6), The Last Stand (3).
Hydramatic manufactures a wide range of bolting machines -- mobile bolters, longwall face bolters (LFB), rib bolters and roof bolters.
This guarantees a high level of safety for the roof bolters, who are working under the temporary roof.
Because of the multiple waveoffs and bolters from other aircraft, approach continued to vector many aircraft in the bolter-waveoff pattern, besides the aircraft that still were pushing from marshal.
Elsewhere, in Poland, KGHM Polska Miedz has placed an extensive order for 11 Toro LHDs, three Tamrock Axera jumbos, and two bolters for the Rudnan, Lubini and Polkowice copper mines.
Immersive Technologies has extended its training platform to underground coal by developing simulators for continuous miners, shuttle cars, roof bolters, long-walls and miner bolters.