Noun
a word or utterance of one syllable
Source: WordNetBy placing the monosyllable mons at the end of the line, Virgil interrupts the usual "shave and a haircut" pattern to produce a jarring rhythm, an effect that echoes the crash of a large wave against the side of a ship. Source: Internet
Richard Dawkins (1976) apparently coined the word "meme" independently of Semon, writing this: “Mimeme” comes from a suitable Greek root, but I want a monosyllable that sounds a bit like “gene”. Source: Internet