D defs.my
Entry 1 sense Webster, 1913

Water willow

/wôt'-ẽr wĭl'-ōˌ/ · Wa·ter wil·low · IPA
01 An American aquatic plant (Dianthera Americana) with long willowlike leaves, and spikes of small purplish flowers.
  1. 1.
    An American aquatic plant (Dianthera Americana) with long willowlike leaves, and spikes of small purplish flowers.(Bot.)