any of several tropical, ploverlike, aquatic birds of the family Jacanidae, most of them having extremely long toes and claws for walking on floating water plants.
ja·ça·na (zhä'sə-nä') n. Any of several tropical water birds of the family Jacanidae, having long toes adapted for walking on floating vegetation. Also called lily-trotter.
[Portuguese jaçanã, from Tupi jaçanam, jaçanã, one that cries out.]