sea apple

noun4

1. •
   A round, colourful sea cucumber of the genera Paracucumaria and Paracolochirus, found primarily in Indo-Pacific waters.
2. •
   The fruit of a West Indian palm (Manicaria plukenetii ⇒ ) Manicaria saccifera, often found floating in the sea.

   • Sea-apple: Manicaria Pluketielii. — 1864
3. •
   A troolie palm; any member of the species Syzygium grande of trees, that can reach 30 m, found along the coastal mountains of Southeast Asia or its fruit.
4. •
   (no longer used) A sea urchin.