[1] : WordNet (r) 2.0

aspen poplar
     n : a poplar that is widely cultivated in the united states; has
         white bark and leaves with whitish undersurfaces syn: white
         poplar, white aspen, abele, silver-leaved poplar,
         populus alba
see also:
white poplar white aspen abele silver-leaved poplar populus alba 

Poplar >> P Words
Poplar, definition of term: Poplar
poplar_pag1.html

Aspen >> A Words
Aspen, definition of term: Aspen
aspen_pag1.html

Poplar Tree >> P Words
Poplar Tree, definition of term: Poplar Tree
poplar+tree_pag1.html

White Poplar >> W Words
White Poplar, definition of term: White Poplar
white+poplar_pag1.html

Tulip Poplar >> T Words
Tulip Poplar, definition of term: Tulip Poplar
tulip+poplar_pag1.html