[na.vic.u.lar] adj [ME naviculare, fr. L navicula boat, dim. of navis] (15c) 1: shaped like a boat "a ~ bone"
2: of, relating to, or involving a navicular bone "~ disease"
[2]navicular n [NL (os) naviculare navicular bone] (1816): a navicular bone; esp: one situated on the big-toe side of the tarsus