'Incense tree' definitions:

Definition of 'incense tree'

noun

Any of various tropical trees of the family Burseraceae yielding fragrant gums or resins that are burned as incense

From: GCIDE

Incense \In"cense\, n. [OE. encens, F. encens, L. incensum, fr. incensus, p. p. of incendere to burn. See Incense to inflame.] [1913 Webster]
1. The perfume or odors exhaled from spices and gums when burned in celebrating religious rites or as an offering to some deity. [1913 Webster]
A thick cloud of incense went up. --Ezek. viii. 11. [1913 Webster]
2. The materials used for the purpose of producing a perfume when burned, as fragrant gums, spices, frankincense, etc. [1913 Webster]
Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon. --Lev. x. 1. [1913 Webster]
3. Also used figuratively. [1913 Webster]
Or heap the shrine of luxury and pride, With incense kindled at the Muse's flame. --Gray. [1913 Webster]
Incense tree, the name of several balsamic trees of the genus Bursera (or Icica) mostly tropical American. The gum resin is used for incense. In Jamaica the Chrysobalanus Icaco, a tree related to the plums, is called incense tree.
Incense wood, the fragrant wood of the tropical American tree Bursera heptaphylla. [1913 Webster]