Pronunciation: (īd'lur),[key] —n. 1. a person who passes time in a lazy or unproductive way.
2. Mach.an idle gear, wheel, or pulley.
3. Railroads.an empty freight car placed under the projecting end of a long object carried by the next car, so that the latter can be connected with another part of the train.
4. Naut.See day man (def. 2).