Definitions
1.nounA tree from one of number of species of tree in the genus Populus (poplars), typically growing along watercourses, with fluffy catkins.
2.nounPopulus sect. Aigeiros, a taxonomic section of the poplar genus
3.nounCottonwood hibiscus (Talipariti tiliaceum, syn. Hibiscus tiliaceus), a flowering shrub or tree in the mallow family