cinquefoil
Concise Oxford English Dictionary © 2008 Oxford University Press:
cinquefoil /ˈsɪŋkfɔɪl/
▶noun
- 1 a herbaceous plant of the rose family, with compound leaves of five leaflets and five-petalled yellow flowers. [Genus Potentilla.]
- 2 Art an ornamental design of five lobes arranged in a circle.
– origin ME: from L. quinquefolium, from quinque ‘five’ + folium ‘leaf’.
'cinquefoil' also found in these Oxford entries:

