Function: noun
Date: 1954
: a rocket-propelled vehicle that runs usually on a single rail and that is used especially in aeronautical experimentation
Function: noun
Date: 1954
: a rocket-propelled vehicle that runs usually on a single rail and that is used especially in aeronautical experimentation
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012