From The Collaborative International Dictionary of English v.0.48 :
Canna \Can"na\, n. [L., a reed. See Cane.] (Bot.) A genus of tropical plants, with large leaves and often with showy flowers. The Indian shot ({Canna Indica) is found in gardens of the northern United States. [1913 Webster]From The Collaborative International Dictionary of English v.0.48 :
Canna \Can"na\, n. [It.] A measure of length in Italy, varying from six to seven feet. See Cane, 4. [1913 Webster]From WordNet (r) 3.0 (2006) :
canna n 1: any plant of the genus Canna having large sheathing leaves and clusters of large showy flowers