Word Study
quatrefoil
OXFORD DICTIONARY
quatrefoil, n. a four-pointed or four-leafed figure, esp. as an ornament in architectural tracery, resembling a flower or clover leaf.
Etymology
ME f. AF f. quatre four: see FOIL(2)
ROGET THESAURUS
quatrefoil
Four
N quaternity, four, tetrad, quartet, quaternion, square, quarter, tetract, tetragon, quadrangle, rectangle, tetrahedron, quadrature, quadrifoil, quadriform, quadruplet, quatrefoil, tetrapod, quadrangle, quad, quadrupole, quadrivium, four, quaternary, quaternal, quadratic, quartile, tetract, tetractic, tetractinal, tetrad, tetragonal, square, quadrate.For further exploring for "quatrefoil" in Webster Dictionary Online