ˌPenny ˈBlack noun
the first British stamp for sticking on envelopes. It was introduced in 1840, and its value was one penny, which was the cost of sending a letter by post in Britain. The stamp shows the head of Queen Victoria on a dark background, and stamp collectors consider it to be very important, although it is not the rarest British stamp.

[TahlilGaran] Dictionary of Contemporary English ▲