Lewis & Short

rūro, āre, v. n., or rūror, āri, v. dep. n. [id.], to live in the country (perh. only in the two foll. passages): dum ruri rurant homines, Plaut. Capt. 1, 1, 16: dum in agro ruror, Varr. ap. Non. 164, 23.