- cottonwood - any of several North American trees of the genus Populus having a tuft of cottony hairs on the seed
--1 is a kind of poplar, poplar tree
--1 has particulars:- white basswood, cottonwood, Tilia heterophylla - American basswood of the Allegheny region
--2 is a kind of linden, linden tree, basswood, lime, lime tree
- white basswood, cottonwood, Tilia heterophylla - American basswood of the Allegheny region