9-letter words containing o, a, k, p, r
- top quark — a type of quark with a mass of c. 176 to 199 GeV/c2, a positive charge 2⁄3 that of an electron, zero charm, and zero strangeness
- trap rock — trap2
- work camp — a camp for prisoners sentenced to labor, especially to outdoor labor such as roadbuilding or farming.
- workplace — a person's place of employment.
- workspace — space used or required for one's work, as in an office or home.