What does bogie mean?
A bogie is the wheeled framework mounted beneath a railway locomotive, carriage, or wagon that houses its wheels and axles. Typically pivoting, it allows each end of a long vehicle to steer independently through curves, distributing weight smoothly and improving stability at speed — a critical piece of rail engineering found on virtually every modern train. Beyond this dominant technical sense, British English uses 'bogie' more loosely for any small wheeled cart or trolley used to shift heavy goods. Historically, the word also appears as a variant spelling of 'bogey', the golfing term for one stroke over par, and of 'bogy', a goblin or frightening spirit. In contemporary use, however, readers will almost always encounter it in the railway context, whether in technical manuals, transport journalism, or descriptions of rolling stock. Its plural is 'bogies'.
The pivoting wheeled assembly beneath a railway vehicle that carries its wheels, axles, suspension, and brakes.
"The new rolling stock was fitted with lightweight composite bogies to reduce track wear."
American English sometimes calls the same component a 'truck'.
A small wheeled platform or cart, especially one used in warehouses or factories to move heavy items.
"She steered the loaded bogie between the pallet racks with practiced ease."
Chiefly British and somewhat informal.
Standard regular plural; applies to all noun senses of the word.
"Both bogies were reconditioned during the annual overhaul."
Every high-speed train you've ever ridden rests on a set of bogies — the swivelling steel cradles that let a 400-tonne train take corners at 300 km/h.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bogie
The word's history is tangled with several related forms. The mechanical railway sense emerged in nineteenth-century Britain during the early development of railways, likely adapted from an existing dialect word for a wheeled cart or trolley. Separately, 'bogie' has long served as a variant spelling of 'bogey' (one stroke over par in golf) and of 'bogy' (an evil spirit or hobgoblin), both of which trace back through Middle English to words denoting a frightening phantom — cognate forms include 'boggle', 'bugbear', and Scottish 'bogle'. The railway and supernatural senses are therefore etymologically distinct strands sharing a common spelling.
How bogie is actually used
The railway engineering sense is standard in both British and American English, though American usage sometimes prefers 'truck' for the same component. The cart/trolley sense is chiefly British and informal; the golf and ghost senses are increasingly rare spellings, with 'bogey' and 'bogy' preferred respectively.
Easily confused with bogie
In golf, a 'bogey' is one stroke over par, whereas 'bogie' primarily denotes a railway wheel assembly; the two spellings are historically related variants but now denote different senses.
'Bogie' can also be a variant spelling of 'bogy', meaning a goblin or evil spirit — unrelated to the mechanical sense.