| CUC | a bitter cress of Europe and America |
|---|---|
| CUC | common European arum with lanceolate spathe and short purple spadix |
| CUC | includes cuckoo |
| CUC | birds having zygodactyl feet (except for the touracos) |
| CUC | cuckoos |
| CUC | type genus of the Cuculidae |
| CUC | common European cuckoo having a distinctive two-note call |
| CUC | cylindrical green fruit with thin green rind and white flesh eaten as a vegetable |
| CUC | a melon vine of the genus Cucumis |
| CUC | American deciduous magnolia having large leaves and fruit like a small cucumber |
| CUC | a melon vine of the genus Cucumis |
| CUC | cucumbers |