Boat-shaped; resembling a boat; cymbiform: in anatomy applied to several parts.n. In anatomy: The bone on the radial side of the proximal row of the carpus, articulating with the lunar, magnum, trapezoid, trapezium, and radius. Also called navicular, radiale. See cuts under Artiodactyla, Perissodactyla, hand, and solidungulate.n. One of the tarsal bones, placed at the inner side, between the astragalus and the three cuneiforms, and sometimes articulating also with the cuboid. Also called navicular. See cut under foot.