clem ‧ a ‧ tis /ˈklemətəs, ˈklemətɪs, kləˈmeɪtəs/ BrE AmE noun [uncountable and countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: Greek klematis 'small dead branches, clematis' , from klema 'small branch' ]
a plant that attaches itself to trees, buildings, fences etc as it grows, and that has white or coloured flowers