Of foreign origin (lbownah); the incense-tree, i.e. (by implication) incense itself -- frankincense.
see HEBREW lbownah
1. the frankincense-tree (Pindar, Herodotus, Sophocles, Euripides, Theophrastus, others).
2. frankincense (Hebrew לְבֹנָה; Leviticus 2:1f, 16; Isaiah 60:6, etc.): Matthew 2:11; Revelation 18:13; (Sophocles, Theophrastus, others). Cf. Lob. ad Phryn., p. 187; (Vanicek, Fremdwörter, under the word. On frankincense see especially Birdwood in the Bible Educator, i., 328ff, 374ff.)