Definitions for "Precancel"
postage stamp or item of postal stationery that is cancelled prior to its use. Precancels are either Bureau Precancels or Local Precancels. Some revenue stamps were also precanceled.
stamp with a printed cancell used for bulk mail
Stamps or stationery issued by the Post Office with words or lines printed thereon which prevent further use of the stamp. Precancelled stamps need not be cancelled again during mail handling. The standard First Day postmarks, however, are applied to FDCs of precancels.