Source : Webster's Revised Unabridged Dictionary (1913)

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}.