The Collaborative International Dictionary of English v.0.48:
Logwood \Log"wood`\n. [So called from being imported in logs.]
The heartwood of a tree (H[ae]matoxylon Campechianum), a
native of South America, It is a red, heavy wood, containing
a crystalline substance called h[ae]matoxylin, and is used
largely in dyeing. An extract from this wood is used in
medicine as an astringent. Also called Campeachy wood, and
bloodwood.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Campeachy Wood \Cam*peach"y Wood`\ [From the bay of Campeachy,
in Mexico.]
Logwood.
[1913 Webster]