Decauville
adjective
De·cau·ville
də̇ˈkōˌvil,
-vēl,
-kȯˌvil
: of, relating to, or being a narrow-gauge railroad whose track is mounted in sections upon transverse metal beams and is easily demountable and transportable
Word History
Etymology
after Paul Decauville †1922 French industrialist who invented equipment for such a railroad