trope

From Wiktionary

Noun[change]

Singular
trope

Plural
tropes

  1. Something which is common in popular culture or in a type of literature, such as ‘once upon a time’ is the first lline of a story
  2. A figure of speech in which words or phrases are used with a special meaning, like a metaphor
  3. (music) A short section at the end of the melody in some early music.
  4. (music) A phrase or verse added to the mass when sung by a choir.