na·vic·u·lar 
(nə-vĭkyə-lər)
(nə-vĭkyə-lər)n.
1. A comma-shaped bone of the human wrist, located in the first row of carpals.
2. A concave bone of the human foot, located between the talus and the metatarsals. In both senses also called scaphoid.
adj.
Shaped like a boat; scaphoid.
[From Latin nāvicula, boat, diminutive of nāvis, ship; see nāu- in the Appendix of Indo-European roots.]