modelmotor
nounUK /ˈmɒdəlˌməʊtə/
US /ˈmɑːdəlˌmoʊtər/
A model motor is a tiny motor that makes toy cars and small machines move.
He put a model motor in his toy car so it could drive across the floor.
RELATED WORDS
OTHER MEANINGS
2. A small electric motor used in scale models and hobby vehicles.
The model motor spun the propeller of his model airplane.
3. A prototype or test version of an engine built for design testing.
Engineers tested the model motor before building the full-size version.
4. A motor that serves as a pattern or example for a larger design.
The model motor showed how the new engine would work.