A jumbo stamp is a legitimate stamp that is perhaps 10 times bigger than a regular stamp, but it is not a minisheet. It will probably have a denomination way above the current standard postage rate. It appears to be a relatively recent innovation and is usually used to commemorate some event.
jumbo means very big so we called it jumbo jet
The jumbo sausage was delicious.That jumbo jet looks huge.
Jumbo Schreiner goes by Winston, and Jumbo.
Jumbo means large.
A Jumbo Jet is any Boeing 747.
Elephant is a jumbo size animal
Jumbo was hit by a train and died
Jumbo Schreiner is 200 cm.
Oko Jumbo died in 1891.
Jumbo S.A. was created in 1986.
The population of Jumbo S.A. is 2,011.
Jumbo Video was created in 1987.