What does "corkwood" mean?

Corkwood: Any one of several trees or shrubs having light or corky wood; esp.: (a) In the United States, the tree Leitneria floridana. (b) In the West Indies: (1) Either of the cotton trees Ochroma lagopus and Pariti tiliaceum. (2) The tree producing the aligator apple. (3) The blolly.

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