Definition of fleuron:
(n) :
An ornament or knob in the shape of a flower
(n) :
(typography) A decorative typographic element, used to separate passages or simply for decoration. Often doubled, e.g. ๐ ๐ or ๐๐, or combined with other fleurons into a short line.
(n) :
(architecture) The small decorative flower at the centre of each side of a Corinthian abacus; a flos.