a writing composed of words not having a certain letter
About the Word:
Lipo means "lacking; without," and gram comes from gramma, meaning "letter."
The most challenging lipogram a decidedly constrained form of writing excludes E, the most common letter in English. In 1939, Ernest Vincent Wright published Gadsby: A Story of Over 50,000 words without using the letter "E." Below is a lipogram version of "Mary Had A Little Lamb" lacking the letter O (from Peter Blinn, curiousnotions.com):
Mary had a little lamb