Definition of clematis in English:
 clematis
noun ˈklɛmətɪskləˈmeɪtɪsˈklɛmədəs
A climbing plant of the buttercup family which bears white, pink, or purple flowers and feathery seeds. Several kinds are cultivated as ornamentals.
Genus Clematis, family Ranunculaceae
 Example sentencesExamples
-  Plant climbing flowers like morning glories or clematis at the foot of the arch.
 -  A few days later and the squashed plants have recovered, the trellis doesn't look quite so glaringly new and the clematis is about to flower.
 -  Of note is the purple clematis which climbs up the wall.
 -  Clematis alpina is usually among the earliest clematis to bloom in the spring.
 -  Wisteria and clematis vines cover the arbors, while Boston ivy and trumpet vines link the two levels.
 
Origin
  
Latin (also denoting the periwinkle), from Greek klēmatis, from klēma 'vine branch'.