(mathematics) Any plane curve that consists of loops (petals) emanating from a central point.

having a pink colour / (idiomatic) cheerfully optimistic

A West Indian melastomaceous shrub (Blakea trinervia), with showy pink flowers.

4,5,6,7-tetrachloro-2',4',5',7'-tetraiodofluorescein, a stain whose sodium salt is commonly used in eyedrops to stain damaged cells and thereby identify damage.

plural of rose hip

Used other than figuratively or idiomatically: see desert, rose. / A flowering plant of South Africa, of genus Adenium. / Rosa stellata, a species of rose native to North America.

Used other than figuratively or idiomatically: see old, rose. / (horticulture) A rose belonging to any of the classes of cultivated roses in existence before the hybrid tea roses were developed.

A variety of hay fever, sometimes attributed to the inhalation of the effluvia of roses.

A machine, or an appendage to a turning lathe, by which a surface or wood, metal, etc., is engraved with a variety of curved lines.

A solid odourless substance which separates from rose oil.