Definition of sweet gum
1 : a North American tree (Liquidambar styraciflua) of the witch-hazel family with palmately lobed glossy green leaves, corky twigs, a round spiny brown fruit cluster, and hard wood
2 : the smooth reddish-brown wood of the sweet gum
Medical Definition of sweet gum
: a North American tree of the genus Liquidambar (L. styraciflua) with a round spiny brown fruit cluster and an inner bark that is the source of American storax
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