Wiktionary
TOPOS, noun. A literary theme or motif; a rhetorical convention or formula.
TOPOS, noun. (mathematics) A certain mathematical structure found in category theory.
Dictionary definition
TOPOS, noun. A traditional theme or motif or literary convention; "James Joyce uses the topos of the Wandering Jew in his Ulysses".
Wise words
Poetry is the rhythmical creation of beauty in words.