sweet gum

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several trees of the genus Liquidambar, especially L. styraciflua of North America and Central America, having palmately lobed leaves, prickly round hanging fruit, and wood formerly used to make furniture.
• noun The aromatic resin obtained from this tree.

from The Century Dictionary.

• noun The American liquidambar, Liquidambar Styraciflua, or its exuding balsam. See Liquidambar, and liquid storax (under storax).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture
• noun aromatic exudate from the sweet gum tree
• noun a North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap