- a South American tree, Bulnesia sarmienti, of the caltrop family, yielding a fragrant essential oil.
- a tropical American tree, Triplaris americana, of the buckwheat family, having large leaves and showy red female flowers.
Origin of palo santo
< American Spanish: literally, holy wood
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018