Source : Webster's Revised Unabridged Dictionary (1913)

Incense \In"cense\, n. [OE. encens, F. encens, L. incensum, fr.
   incensus, p. p. of incendere to burn. See {Incense} to
   inflame.]
   1. The perfume or odors exhaled from spices and gums when
      burned in celebrating religious rites or as an offering to
      some deity.

            A thick of incense went up.           --Ezek. viii.
                                                  11.

   2. The materials used for the purpose of producing a perfume
      when burned, as fragrant gums, spices, frankincense, etc.

            Nadab and Abihu, the sons of Aaron, took either of
            them his censer, and put fire therein, and put
            incense thereon.                      --Lev. x. 1.

   3. Also used figuratively.

            Or heap the shrine of luxury and pride,

            With incense kindled at the Muse's flame. --Gray.

   {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}.