motive power

If a kite would give motive power to a man skating, why not use a more up-to-date air-power scheme on the ice?

Tug service for sailing ships or vessels without motive power is at the rate of $15 per hour.

I'll give you six months in which to make good as a model superintendent of motive power.

He saw that the motive power which would carry itself forward and drag repeal with it, was in the land.

The motive power was a tackle attached to trees, which was worked by men, from fourteen to twenty of whom were employed upon it.