Cyranose de Bergerac, a poet with a foot-long nose, tries to help the Queen of France finish her poem in a "Monsterpiece Theater" segment in season 23 of Sesame Street. Unfortunately, the word used to finish it is the word "nose." Cyranose is very sensitive about his long nose, and will go into a frenzy, swishing it back and forth like a sword, if anyone does so much as say (or write) the word "Nose", in his presence. The segment was written by Tony Geiss.
After this segment aired, Cyranose appeared in a few episodes throughout the 1990s, including Episode 3010, 3233, and 3382, the first of which, involves the residents of Sesame Street trying to help him overcome his insecurity about his nose, without upsetting him. He also made a brief cameo in an Elmo's World episode about noses (performed by Joey Mazzarino and with a pink nose instead).
The character was inspired by Edmond Rostand's 1897 play Cyrano de Bergerac.