A marking made by a postal service on a letter, package, postcard or the like, usually indicating the place where and the date and time when the item was received or processed for the first time, and often serving to cancel a postage stamp
A mark stamped onto the envelope or stamp showing the date, time, and place of mailing Some postmarks may show the post offices through which the letter has passed (especially if it is registered)
a cancellation mark stamped on mail by postal officials; indicates the post office and date of mailing stamp with a postmark to indicate date and time of mailing
A postmark is a mark which is printed on letters and packages at a post office. It shows the time and place at which something was posted. All the letters bore an Aberdeen postmark. an official mark made on a letter, package etc to show when and where it was posted
Any mark, handstruck, machine-applied or in manuscript form, used on postal items in order items in order to cancel the stamps and/or record the date and origin of their transit through the mail services (see Cancellation)
Any official postal marking The term is usually used specifically in reference to cancellations bearing the name of a post office of origin and a mailing date