overspeed UK /ˌəʊ.vəˈspiːd/US /ˈoʊ.vɚˌspid/verb 3noun 1forms 4 verb3 •To travel excessively fast or beyond the permitted rate.Caully-flowers over-speeding to pome and head..should be quite erradicated ^([sic – meaning eradicated]). — 1691 •(India) To speed; to drive a vehicle faster than the permitted speed limit. •To operate an engine or machine too fast.The device should be periodically tested by overspeeding the engine say once a month. — 1949 noun1 •Speed that exceeds a reasonable or permitted rate.Trashes are clogs strapped round the neck of a dog to prevent his overspeed. — 1826 formsoversped · overspeeded · overspeeding · overspeeds