- any of several trees of the genus Hydnocarpus (or Taraktogenos), of southeastern Asia, especially H. kurzii, the seeds of which yield chaulmoogra oil.
- a tropical Asian tree, Taraktogenos (or Hydnocarpus) kurzii: family Flacourtiaceae
- oil from the seed of this tree, used in treating leprosy
- any of several similar or related trees