furan - a colorless toxic flammable liquid used in the synthesis of nylon. furane, furfuran. organic compound - any compound of carbon and another element or a radical. nitrofuran - derivative of furan used to inhibit bacterial growth.
precarious adjective. âº in a âdangerous âstate because of not being âsafe or not being âheld in âplace âfirmly: The âlorry was âlodged in a very precarious way, with âits âfront âwheels âhanging over the âcliff.
verb (used with object), precluded, precluding. 1. to prevent the presence, existence, or occurrence of; make impossible: The insufficiency of the evidence precludes a conviction. 2. to exclude or debar from something: His physical disability precludes an athletic career for him.