What is the meaning of Palo_santo?

 A medium-sized deciduous tree indigenous to the tropical dry forests of Central and South America, Bursera graveolens or Gonopterodendron sarmientoi, known for its sweet scent.

guaiacwood, holywood lignumvitae (Guaiacum sanctum and trees and wood of other species of genus Guaiacum

Gonopterodendron sarmientoi, until recently called Bulnesia sarmientoi

Bursera graveolens

Diospyros spp.

Dasyphyllum diacanthoides, earlier called Flotovia diacanthoides

 santol, apparently a phono-semantic matching of Tagalog santol (Sandoricum ternatum syn. Sandoricum vidalii and Sandoricum venosum, Sandoricum koetjape)

Diphysa suberosa

 Fouquieria formosa

 Weinmannia trichosperma

 Porlieria higrometrica

 Ocotea foeniculacea

Source: wiktionary.org