Sentence:  The <WSD>univocal</WSD> is by no means the preserve of the nineteenth century. Georges Perec's 1972 novella "Les revenentes" complemented his earlier lipogrammatic work by being a univocalic piece in which the letter "e" is the only vowel used. 
Meaning of the word marked with <WSD> tags:  A document containing instances of only one vowel.