23-letter words containing c, a, u, s, e, r
- volumetric displacement — the volume of air per revolution that passes through a mechanical pump when the pressure at the intake and the exhaust is the same as that of the atmosphere
- water off a duck's back — any of numerous wild or domesticated web-footed swimming birds of the family Anatidae, especially of the genus Anas and allied genera, characterized by abroad, flat bill, short legs, and depressed body.